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 PGM-24 25 J u l y 1330 1435 1452 1515 1622 1759 2259

26 July 0600 0830 1050 1725

PGM-25

Arrived in vicinity of BikiniIsland; landing partywent ashore. Caught on reef while trying to avoidcontaminated watec. Free of reef under m power. Pcoceedingback toEneu withlanding patty. Anchored in vicinity of Eneu. Anchoredcloseto USS b u n t McKinley (AGC-7): made preparations to evacuate PGn because of radioactivity. Evacuated Crew to USS Applinq (APA-58). except for the captain and three enlisted men. Crew back aboard. Underway Onstation toconductradsafepatrol duty. Anchored in vicinity of Haven; crew evacuated to USS Henrico (APA-45) except for captain and emergency standby team.

.

27 July 0525 0720 1848

Crew returned aboard. Underway for patrol. Anchored near Haven.

28 July 083011620 1825 2110

Proceeded on patrol. Anchored In vicinity of Shifted anchorage.

29 July 1137 1256

Moored alongside H s. Anchored.

30 July 0751 0952 1230 1530 1625 1929 31 July 0835 1 August 1407

1455 1712 1945 2 August 0934 1130-1530 1630 1755 1953 3 August 1125

1215 1500 1717

5 August 1124AnchoredoffJeleteIsland. H a v e n and MountMcKinley. 1830Anchorednear

7 August 1000Underway to BokaetoktokIsland. 1220Arrived at Bokaetoktok Island, layingto waiting for monitor. 1828Anchoredoff

Haven.

8-12 August Entered drydock aboard ARD-29 of screws and shafts. 12AugustTowed

to Bikinianchoragearea Wenatchee (ATF-118).

by

13-24 August Anchored. Did not get underway. 25 August Towed

by ATA-124 to Kwajalein.

26 AugustArrived

at Kwajalein.

28 August-2 September Drydocked for repairs. 2 September Anchored

in Kwajalein.

4 SeptemberPatrolledKwajalein area.

Haven.

for repair

5 September 1235Departedfor 1935 Ordered to return

CROSSROADS

target

Guam.

to Kwajalein.

6 September Arrived Kwajalein. 9 September

Left for Pearl Harboc.

16 September Arrlved at Pearl Harbor. Underway to Aomen Island to collect radiologlcal data. Arrived at Aomen Island. put radiological party ashore. Proceeded to Nam Island. Laying to offN a. Radiological party returned aboard from Narn Island. Anchored close asternof H e.

P6H-25 Crew S l z e : 53 E l k l nA l t o lA l r r l v a l 1: 5 Hay 1946 10 August 1946 E l k l nA l t o lD l eparture: Shot ABLE L o c a t l o n : 20 nrnl ( 3 7 krn) ENE Shot BAKER L o c a t l o n : 8 nrnl ( 1 5 km) S Decontarnlnatlon Locatlon: New O r l e a n s F l n aCl l e a r a n c e : 28 Hay 1947

Anchored in berth (N)34A. Proceeding to entrance of lagoon to flush out saltwater system. Comenced flushing out saltwater system. Moored alongside USS Wildcat (AW-2). Anchored in vicinity of

Haven.

Task U n j t a n dF u n c t l o n FGM-25. a patrol motor gunboat. was a member of TU 1.8.3 (Dispatch Boat and Boat Pool Unit). It was assigned to perform lagoon radiological patrols during the first few days following each shot, after which i t was to perform boat pool dut ies

.

Shot ABLE ( 1 J u l y, 0 9 0 0 )

Proceeded to northwestern islands to conduct radiological survey. on patrol. Arrived at Athen [Aomen?] Island. Radiological party returned. Anchored in berth 383 nearw.

1 July 0920 1130 1300 1301 1310 1315 1620

Proceeding out of lagoon to flush saltwater tanks. Started flushing. Returned to lagoon, still flushing. Anchored near m.

38 2

Underway for area Franklin for CJTF 1 Op Plan for =LE day. Proceeding to lagoon entrance. Entered the lagoon and began radiological patrol with LCPL-B-9. B-10. and B-11. Entered radioactive area. Backed clear of radioactive area. Laying to. Steaming in sectoc Denmrk. Original radsafe party returned to Haven ("12); new radiological party on board.

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 PGM-23 3 September 2218

PGM-24

Secured from special sea detail, orders to patrol area of target vessels having been cancelled by CTU 1.8.

2 July 0755

4 September 0930-1012 Hoored alongside USS Tombiqbee (Am-11) to take on water. Anchored in berth King-17. 1023 Anchored in berth K-9. 1322 Underway 1506 Moored to starboard slde "2of 4. 1525 1904 Underway. 1907 Anchored In Unspecified anchorage. Kuajaleln.

1130 1143 1147

.

1240 1340 1430

5 September 1135 Proceeding to N.O.B.. Guam. 1920 Received orders to proceed back to Kwajalein.

1530 1548 1935

6 September 0810 1537

1945

Anchored in berthK-21, Kuajalein. Moored to portside of PGW-24.

2004 7 September 1312

Anchored in berth K-16.

3 July

0906 1243 1545

8 September Shifted anchorage in berth K-16. 1325 Shifted anchorage to unspecified point 1925 in Kwajalein Lagoon. 9 September

Departed for Pearl Harbor.

16 September

Arrived at Pearl Harbor. An inspection for radioactivity was conducted.

1802

Underway resuming radiological patrol. Laying to. underway for next station to obtain water samples for radsafe section. Anchored in vicinity of.-H

4 July

1000 1035 1123

PGH-24

1730

Crew Slze: 48 Blklnl Atoll Arrlval: 14 May 1946 Blklnl Atoll Departure: 25 August 1946 Shot ABLE Locatlon: 20 nml (37 k m ) ENE Shot BAKER Locatlon: 8 nml (15 km) S Decontamlnatlon Locatlon: Pearl Harbor 1947 Operatlonal Clearance: 13 February Flnal Clearance: 13 March 1947

Underway to make radiological patrol of northern part of area in vicinity of target vessels. LCPL alongside to pick up water samples and record sheets. Anchored close astern target ship USs Nevada (88-36), Underway and laid to. waiting for tugs to t c w target shipUSS Independence (OJL22) clear of area. Anchored close astern to Nevada. LCPL-B-12 took some oceanographic equipment from PGn-24 aboard. of lagoon to underway to western edge take radiological samples. Arrived on station. Proceeding to specified sectors. taking samples on arrival. USS Haven Arrived in last sector near (AH-12). Received a radiological group aboard from H a v e n
 * disembarked group that was aboard.

Anchored at Bikini.

5 July 1116

1232 1515 1533

Underway to resume radiological patrol of western part of lagoon. Moored alongside PGn-23. Underway from PGW-23. steaming to first station.carryingoutradiological patrols. Anchored off Haven. Underway for Bokdrolul. Emkaetoktok. Adrikan.Jelete,andLukojislandsto conduct radiological tests. Arrived at Bokdrolul Island. laying to awaiting radiologists to clear island. Underway for Oroken and Adrikan islands. Arrived at passage between Oroken and Adrikan islands. Anchored in vicinity of

Task U n l t and Functlon "24. a patrol motor gunboat, was a member of 1816 TU 1.8.3 (Dispatch Boat and Boat Pool Unit). It Engaged in routine activities. 6-24 July was assigned to perform lagoon radiological patrols. These were conductedin the first few days following each shot. The ship then performed boatShot BAKER (25 July, 0835) pool duties. 24 July Shot ABLE ( 1 July, 0900) 1700 Arrived in area Franklin. joining PGn-25, FGn-29. and "32. Proceeded in column 30 June to patrol sector. 1505ProceedingtoareaFranklin. 25 July 1 July 0001SteaminginareaFranklin. 0903-0950 Proceeding to area Caterpillar. 0838 ProceededtoareaCaterpillar. 1120Arrivedatlagoonentrance. 0940Proceededtolagoonentrance. 1145-1210 Proceedlng to patrol sector Chile Inc m 1225 Entered the lagoon and proceeded via pany with radiological patrol boats LCPLsafest route with Bikini landing party 8-6,B-7, and 8-8. following in LCPL-A-6. 1530Layingtoandchangingpositioninacin newstationaccompaniedby 1245Arrived cordance with radiological readings. LCPL-B-6, B-7. and B-8, laying to awaitin sectorChile. 1853Anchored ing further orders. 1300 Proceedlng to Bikini via safest route.

Haven.

38 1

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 PGM-23 27 July 1230 1815 28 July 0015 1315 1530 1700 29 July 0700 0902 1818 30 July 0657-1428 1428 31 July 0822-1132 1132 1600 1 August 0913 1349

2 August 1039 1324 1406 1721 1835 3 August 1016 1128 1710 10 August 0845 0942

1629

PGM-23

Radsafe section ordered all crewmembers except 5 men, to depart ship. Remaining crew left ship for Applinq. A new monitor reported aboard.

16 August

1407

"w officers boarded as skeleton crew.

19 August 1350-1641 1720

Fourmenreportedaboard as skeleton crew. Ten men reported aboard. All crewmembers except 1 1 men and officers evacuated to Avvlinq.

20 August 1032-1546 21 1 1 -2248

Underway on photographic assignment. Steaming on patrol assignment.

21 August 2206-2346

On patrol assignment.

Crew returned from ADplinq. Radiological monitors aboard, proceeding on radiological surveyof lagoon. Anchored in temporary berth I, Bikini.

22 August 1300-1310 2047-2219

Conducted radlologlcal survey. Anchored in berth 34A. Carried out radiological patrol. Anchored 40 yards (37 meters) east of berth 251A. Shifted to berth 34A.

24 August 2045-2147

Patrolled target artay.

25 August 1341

Underway for Kwajalein.

29 August 2156 2321

Underway for decontamination run. steaming on various courses and speeds inside lagoon. Passed lagoon entrance and proceeded on various courses on 6-hour decontamination run outside lagoon. Anchored in Bikini Lagoon in berth 363.

15 August 0845-1201 1828

Routine activities. Towed two target L C & west of the target array for sinking and sank them. Anchored 400 yards (366 meters) north of berth 38.

Anchored in Kwajalein. Checked and declared radiologically safe by Radsafe Section. Radsafe recommended another check for radioactivity be made i f the ship were drydocked o r major machinery overhauled. Underway to carry out patrol of target ship area. Anchored in Kwajalein Lagoon in berth 20.

30 August

0813 0847-0925

Representatives from USS Bowditch (AGS-4) came aboard for scientiflc work. Underway at various courses and speeds making survey of lagoon. stopplng every 1,000 to 2,000 yards (0.9 to 1.8 km) to take water samples. Anchored 300 yards (274 meters) southwest of berth 114.

Radsafe officer removed radiological gear. On patrol throughout target array. Patrolled target area.

Anchored 400 yards (366 meters) northeast 26 August of berth 14. 28 August Shiftedanchorage.bearings Beacon C. 1135-1243 129OT. Beacon B. 81.5OT. Beacon E , 26.59'. Proceeding on decontaminationrun outside the lagoon. Anchored 1,600 yards (1.5 km) from berth 370. Proceeding on decontamination trip outside the lagoon. Anchored in berth 384. Shifted anchorage to berth 361.

Photographed target ships. Anchored 400 yards (366 meters) north of berth 38.

23 August 2237-2345

1010-1129 1129 1221 2146 2222 31 August 2019 221 5

1 September 2144 2355 2

11-15 August

Removed a reel placed aboard by the radsafe department.

Underway to take on fuel and water. lloored starboard side to USS Severn (AO61). Moored alongside USS Enoree (AO-69) to take on fuel oil. Underway to assigned anchorage. Anchored in berth 18. Underway to patrol target ship area. Anchored in berth 22-King. Kwajalein. Underway to patrol target area. Anchored in berth 22-King. Underway on nightly patrol of target ship area. Anchored in berth King-22.

September 1135-1231 Floored alongsideLCI-1065, which was moored alongside USS Limestone (IX-158). 1251 Anchored in berth King-22. 2214 Underway to make patrol of target area. 2327 Anchored in berth King-22.

3 September 2140

380

Flade preparations for getting underway.

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 PGM-23

USS Pensacola(CA-24) 10 August 1 July 0445

1300Themenwereexaminedandreturnedto duty. 11-24 August High radioactivity continued to prevent reboarding of the ship except for short periods of time.

0650 1130

14 August to 0830RadlologistscameaboardRockinqham check all Pensacola personnel who had been on board Pensacola. Results were satisfactory. Pensacola continued to be unsafe for habitation.

1715 1857

2 July 0708-1452

17. 19 August About 200 Pensacola cremembers were transferred to Clymer.

1452 19 August Operations were started to pump all the water out of the ship and temporarily plug up the leaks.

3 July 0653

22 AugustTopsideaverage1.0R/24hours(Reference 7).

1201 1345 1818 1911

24 August

Six men were transferred to Preserver for temporary additlonal duty in connection with towing and anchoring Pensacola. A small party reboarded Pensacola to pre0830 pare it For towing. tow toKwajalein:crewmembers 1000Takenin departed aboard Rockinqham.

26AugustArrivedatKwajalein:the6-mantowlng detail returned to Rockinqham from server.

4 July 0910

w-

5 July 0953

1850

August 28 Decommissioned.

1 OctoberTopsideaverage

0.8 R/24hours(Refer-

6-23 July

Underwayafterevacuationpartyfrom Aomen reported aboard. Rendezvoused with PGn-24.PGW-25. PGW-29. "31. and PGM-32. Received clearance into lagoon from radsafe section. Conrnenced making oceanographic and radiological survey of sector Brazllwithradloloqicalpatrolboats (LCPL-A-1. A-2, A-3, and B-19). Evacuation party from Aomen departed. Anchored in berth 33. Bikini. Conducted radiological and oceanographic surveys. Anchored in berth 40. Underway in accordance with safety plan of CJTF 1 Op Plan 1-46. Anchored at Bikinl. Underway. Moored alongside USS Barton (DD-772). Anchored in berth 21. Shifted anchorage. bearings Beacon "B" 112.5°T.Beacon "C" 7 6 q . Beacon "E" 31.59. Underway from anchorage. proceeding to make radiological surveys of Lukoj, Bokonejien.Nam.Aomen.Iroij.Odrik. and Lomilik islands. Anchored in berth 3A. No

contactwithtargetvessels.

ence 7). Shot BAKER ( 2 5 July, 0835)

Pensacola was towed to Puget Sound Naval Shipyard by USS Hitchiti (ATP-103) and USS Takelma (ATF-113) For 24 July radiological research April 1947. 21 0950 Radlological on section party aboard. comPERRY, NEWHAN K. ; see USS NEWHAN

menced operation of BAKER D-1. 1235 Evacuation of Iroij Island completed. 1605Underwaytodropseismographicandwave measurement buoys.

K. PERRY (DO-883)

PGH-23

25 July 0508

Crew S l z e : 39 5 Hay 1946 B l k l nA l t o lA l rrlval: B l k l nAl t o lDl e p a r t u r e : 25 August 1946 Shot ABLE L o c a t l o n : 20 nml ( 3 7 km) EN€ Shot BAKER L o c a t l o n : B nml ( 1 5 km) S O e c o n t a m l n a t l oLno c a t l o nP:e aH r la r b o r Oecomnlssloned1947 Task U n l t a n dF u n c t l o n PGM-23, a patrol motor gunboat, was a

0612 1009

1835

member of

TU 1.8.3 (Dispatch Boat and Boat Pool Unit). It 26 July 0743 was assigned to perform lagoon radiological patrols. These were conductedin the first few days following each test. The ship then performed boat 1657 pool duties. 1702 Shot ABLE ( 1J u l y 0, 9 0 0 )

30June

Evacuation party From Aomen Island aboard. Departed for area Franklin as assigned in CJTF 1 Op Plan 1-46. EnteredthelagoontoawaitLCPL-A-1, A-2, A-3, and B-19 of lagoon safety patrol;underwayconductingradiological to reconnaissanceoflagoonnorthwest north of surface zero (sector Argentina). Anchored in berth 251. Blkini.

A radsafepartyreportedaboardtopar-27July ticlpate in theoperation.Evacuated personnel from Iroij and Nam before anchoring off Aomen Island.

Underway, proceedlng to make radiological reconnaissance of lagoon in accordance wlth CJTF 1 Op Plan 1-46. All monitors and oceanographers departed. ternAnchored 700 yards (640 meters) From porary berth Roger.

0614 Proceeded vey 1158 Anchored

.

379

to carry out radiological sur-

off

OSS

Appllng (APA-58).

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 USS

Pensacola ( C A - 2 4 ) USS

PENSACOLA (CA-24)

Crew Slze: 354 Btklnl Atoll Arrlval: 28-29 May 1946 Blklnl Atoll Departure: 24 A u g u s t 1946 Crew Locatlon for Shot ABLE: USS George Clymer (APA-27); USS Rocklnqham ( APA-229) Crew Locatlon for Shot BAKER: Clymer; Rockinaham Shot ABLE Locatlon: 710 y a r d s (649 meters) E Shot B A K E R Locatlon: 640 y a r d s ( 5 8 5 meters) W Oecontamlnatlon Locatlons: Kuafaleln; Bremerton Sunk 10 November 1948. o f f the coast o f Washlngton Task U n l t and Functlon The heavy cruiser Pensacola served in TU 1.2.1 (Battleship and Cruiser Unit). Cruiser Division 23. It was a target vessel for CROSSROADS. Its Food and crew was evacuated before each shot. clothing. radio. radar. and electronic equipment were placed aboard the vessel for experimental reasons.

USS Pensacola ( C A - 2 4 ) Shot B A K E R (25 July, 0835) 25 July Crew aboard Rockinqham. 0345 Last-minute personnel left ship for Clymer The detonation caused extensive damage to and it was radiologically unsafe for habitation.

.

27 July

Pensacola crewmembers aboard Clymer apparently transferred to Rockinqham.

30 July

ATR-87 washed down Pensacola for 4 hours with high-pressure hoses (Reference 6. p. VII-I-49-B). The ship had tolerances of 6 and8 minutes.

31 July

ATR-87 washed d m Pensacola with foamite (Reference 6. p. VII-I-57-B).

1 August

Work parties from Pensacola boarded Preserver (ARS-8) to go alongside

&.

Shot A B L E (1 1 July 0340

1630

1702 2 July 1630

3 July 0800 0915 0925

1040-1200 1300-1700

1320-1430 1-10 July

1420 CompletedevacuationofPensacolato Rockinqham. Last-minute security detail evacuated to Clymer. Clymer and Rockinqham reentered the lagoon and proceeded to anchor for the night. Later in the night, Pensacola personnelaboardClymerdisembarkedand joined Pensacola crew aboard Rockinqham. Fire noted burning on fantail (Reference 6, p. VII-I-16-A).

1600-1623

2 August 0830 1002

AlthoughFensacola hadnotyetbeen clearedradiologically.theconmanding officer made a survey of Pensacola from a small boat but did not board.

1028

Pensacola cleared radiologically. 1415-1528 The conmanding officer. Team A. and radsafe monltor came aboard. Joint Chiefs of Staff and members of the President'sEvaluationBoard. who had 1805-1810 boarded prior to the commanding officer. left the ship. Conducted radiological inspections of the 5 August 1430 topside structures. Topside was cleared radiologically withsome exceptions. Team B on board to open below deck spaces and continue with radiological survey bel ~ .Pensacoladeclaredradiologically clear with minor exceptions. A security 7 August watch of 3 officers and 23 enlisted men 1430-1540 remained aboard. Task force medical officer on board for inspection. 8 August 1510-1610 No Pensacola crewmembers regularly berthed aboard. but continued living on Rockinqham. The crew worked on Pensacola 10 August from 3 to 10 July and returned to Rock1030-1130 inqhameachnightexceptforasmall security detail.

6 July 1349

Shifted by tugs t o berth 286.

11 July 1035

Crew returned to quarters aboard. Anchored in berth 161.

a-

378

@

a-

Preserver washed down decks and superstructures with saltwater to reduce high radioactivity after a boarding party from Pensacola found it unsafe. Repair teams aboard to lay out hoses and pumpoutfloodedcompartments.Repair teams left Pensacola and the Pensacola boarding party returned to Rockinqham. Radioactivity was too high to permit an accurate assessment of damage. Repairpartiesboarded USS Reclaimer (ARS-42). Repair parties boarded Pensacola and completedlayingouthosesandconnected portable pump in preparation for pumping out flooded compartments. Reclaimerstoodclearfromalongside Pensacola due toheavyradioactivity. which prevented i t from remaining. Reclaimer alongside Pensacola to complete connecting pump and hoses. High radioactivity prevented reboarding except for short periods of time. Reclaimermooredalongsidetorefuel Pump. Reclaimer went alongside Pensacola. Reboarding groups boarded Pensacola to adjust hoses and to continue preliminary damage inspection. Reboarding party from Reclaimer adjusted hoses. Reclaimer alongside Pensacola with boarding party to adjust hoses.

re-

A small boarding party from Reclaimer came aboard to adjust pump hoses and inspect damage. In accordance with advice from radiological monitor. four men were for examination sent t o VSS Haven ("12) because their hands had been contaminated while working on Pensacola.

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 USS

Pennsylvania ( 6 6 - 3 8 )

USS

Table A.9.

3 July

1600 Remainder of crew returned aboard. 5 July 1700Jettisonedtwo

Pennsylvania (BB-38)

Gelger readings aboard USS Pennsylvanla (68-38) b y shlp's company the f t r s t day o f reboardlng ( 8 A u g u s t 1946).

test OS2Uaircraft. Readlng (R/24 hours)

6 July 1026-1440 Conducted diving operations to check the underwater condition of the ship. Range Locatlon

Maxlmurn

Locatlon of Maxlmum

Shot B A K E R (25 J u l y, 0835)

25 July 0357 1408

27 July 1030 1400 1608

The last-minuteevacuationgroup was evacuated to Rockbridqe. CJTF 1 told Dsn to avoid Pennsylvania as radioactivity on board was sharp with 6. p. VII-Ihigh intensity (Reference 11-A). Pennsylvaniacleared for theinitial boarding team. Pennsylvania last-minute creume&rs aboardRockbridaeweretransferredto ClymeC. USS Reclaimer (ARS-42) passed Pennsylvania, which had a 25-minute tolerance.

Starboard, main deck aft

2.0 - 4.0

Port , maln deck aft

2.0 - 4.015.0

Port, starboard side o f forecastle

1.5

Superstructure deck

2.0 -Vegetable 4.0

Maln m a s t

3 August

was The after section of Pennsylvania washed down wlth foamite by salvage vessels.

8 August

0930

Deliver (ARS-23) reported having completed covering Pennsylvania with foam (Reference 6. p. VII-I-66-B).

m-

3.

work: continued decontamination work on from the weather decks with assistance workingpartiesfromtarget ships E Independence (CVL-22). USS Pensacola (CA24). USS Ruqford (DD-389). and USS Ralph Talbot (DD-390).

USS

Deliver was instructed to wash down sylvanla thoroughly using high-pressure streams and afterwards take Geiger readings from 50 feet (15 meters) on each side (Reference 6. p. VII-143-77).

18.0Scupper (waterways) generally had hot spots

Slightly >1.5

Pennsvlvania was reported to be slightly down by the stern with a slight starboard list.

1 August

0831

Plane

1.5

Source: Reference 31 July 1400

3.0

Yaterline. scuppers

locker, water accumulated

Foremast 28 July

-

10.0

1 1 August

All decontamination work on Pennsylvania was halted.

14 August Radiological monitors tested men been on Pennsylvania.

who had

16 August The air in the ice room on Pennsvlvania was found radiologically unsafe.The crew The first Pennsylvaniaboardingteam, returnedtoremannedtargetship along with the radiological monitors from Niaqara (APA-87). where Pennsylvania percomonenced a preliminary inspection. sonnel had been transferred for berthing Theradiologicalsurveyshoweda45and messing. minute to 2-hour tolerance on the weather decks. Geiger readings are presented in 17-21 August Working parties boarded Pennsylvania to Table A.9. Pumping and radlological deinspect and prepare i t for towing. contamination was carried on until 1700. at which time the ship was closed up and 21 Auaust the boarding team returned to Clymer. 1400 Pennsylvania underway in tow by USS Chow(ATF-100) for Kwajalein.Topside average 0.7 R/24 hours (Reference7). Boarding team worked on radiological decontamination and pumping of the after 24 August compartments. Canvas, manila.andcork 1100Pennsylvaniaarrived at Kwajalein. floats were removed from the topside, and the starboard side of the quarterdeck was29 AugustDecomnlssioned at Kwajalein. scrubbed in decontamination efforts. The boarding team returned to Clymer. 20 September Topside average 0.39 R/24 hours (Refecence 7 ).

e

Haven.

-_1

9 August 0845-1630

10 August 0840

=

The boarding team boarded PeMSVlVMia Pennsylvaniaunderwentradiologicalandstructural and commenced salvage and decontamination studies until 10 February 1948. W e n i t was sunk.

377

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 USS Parche (SS-384)

USS Pennsylvanla (66-38)

C r e uL o c a t l o nf oSr h o t BAKER: Clymer;Rockbrldge Shot ABLE L o c a t l o n1:. 5 4 v1 a r d (s1 . 4 km) SE ki) s Shot BAKER L o c a t l o n i:, l 4 0 - y a r d s ' ( l. o Sunk 1 0F e b r u a r y1 9 4 8n e a rK w a j a l e l n

1210-1510 Opening up boat. 2-24JulyCrewaboard. Shot B A K E R ( 2 5J u l y ,0 8 3 5 )

Task U n l t and F u n c t l o n

The battleship Pennsylvania served in TU 1.2.1 (Battleship and Cruiser Unit), Battleship Division 9. as a target ship for CROSSROADS. Its crew left the ship for each shot. Different kinds of materials were placed aboard the ship for experimental reasons. The materials included food and clothing, ammunition.andradio,radar.andelectronic equipment.

26 July 1600

6-8 August

Preserver(ARS-8)wasdirectedto proceed to the vicinity of target submarines USS Skate (SS-305) and Parche to make a radiological survey around five submergedsubmarines(Reference 6 . p. VII-I-17-B). USS

Shot ABLE ( 1 J u l y, 0900)

Parche scrubbed down using boiler cmpound. The boat was cleaned alternately by scrubbing with boiler compound and applying a lye bath.

nost Pennsylvania crewmembers were evacuated to c1ymer and Rockbridqe on29 and 30 July.

8 August 0900

0935 August 14

Crew transferred to re.mnned target ship USS Fillmore (APA-83). Anchored near berth 145.

1 July 0335

Crew delivered a sample of wood the deck to USS Haven (AH-12) for study by the Radsafe Office. Parche scrubbed down with lye and its trim pump hosed i t down using high pressure.

19 August 1044 Anchored in berth112. Anchored near berth 145. 1710 During the day. the ship was again hosed down. Sulfuric acid removed any rust.

1314 1319 1330

1445 1523 1700 1106 1905

wood on bridge deck and 20 August Crew ripped up hosed it down (Reference 4). 2 July The sizes of the working parties and their times aboard 1013 Parche from 6 August to 21 August are swm~rized in is Table A.7. Shipboard contamination aboard Parche reported in Table A.8. 1130

22 August 0745 Parche reboarded with entire crew. 0900Underway to Kwajalein.

1155 23 August 1100 ArrivedatKwajalein. 1430CrewtransferredtoFillmore. 24 August Crew reboarded for

8 hours.

25 August Crew reboarded for

6 hours.

26 August Crew returned

1325

1407

to live aboard.

1415 28 August Departed bor.

for San Francisco via Pearl Har-

1435 1455

USS PENNSYLVANIA (86-38) Crew Size: 484 B l k l nA l t o lA l rrlval: B l k l nAl t o lDl e D a r t I J r e : Crew L o c a t l o nf o rS h o t

28-29 May 1946 21 Auoust 1916 ABLE: USS GeoroeClymer (APA-27); USS Rocklnoham

1501 2305

( APA-229)

376

The last-minute evacuation group left for Rockbridqe, leavlng no persons aboard. Explosions amidship noted (Reference 6 . p . VII-I-8-A). A fire flared up on Pennsylvania and burned continuously until about 1530 when it was extinguished by the DsM salvage parties. PennsylvaniawasreportedGeigersour (Reference 6 . p. VII-I-11-A). Radiological teams in boats B14 and B3 reported Pennsylvania Geiger s e t (Reference 6, p. VII-I-lla-A). CKW consolidated on Clymer. USS Current (ARS-22) reported PennsylGeiger sweet (Reference 6. p . VIII-17-A). Ds?! declared Pennsylvania clear for boarding by TeamsA and B; to be boarded on the following day. The commanding officer and a portion of Boarding Team A departed from Clvmet for USS Haven ("12) to pick up the radiological monitor. The radiological monitor was taken aboard the boat and the .party. headed for permsylvanla. The ship's initial boarding teami m d i ately commenced a radiologlcal clearance of the topside. The topside and the foremast and main be radiologically mastwerefoundto clear. and the inspection was continued below decks. The casemates (armored enclosures to fire guns from) and main and second decks were found to be radlologlcally clear, The engine rooms, fire rooms, and auxiliary spaces were found to be radiologically clear. The remainder of Team A and Team B was received aboard. The radiological officer and commanding officer satisfied themselves that permsylvanlawasradiologicallyclearand safe. The radiological monitor collected water samples and returnedt o Clearance to turn on fteshwater was obtained.

Haven.

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 USS Parche ( S S - 3 8 4 )

USS Panamlnt ( A G C - 1 3 )

1 July 1541

TableA.7.

from Anchored in berth 250. Observers Panamint inspected the entire target area in small boats and were permitted to USS Arkansas board target ships Nevada. (88-33). and German cruiser Prinz Euqen (Reference 6, p. VII-Q-9).

2 July 0954 Underway. 1040 Target ship Japanese cruiser Sakawa sighted sinking by the stern. 1145Anchored in berth20.

Number o f men d e c o n t a m l n a t l n g USS Parche (SS-384)betweenband21Augustand t h e l rl e n g t h s o f t l m ea b o a r d.

Date

b August 7 August

8 August

Left Bikini Atoll.

10August

11 August

6 July 0955Anchored at Kwajalein. 1500BeganthePacificcruise thathadbeen plannedtooccupytheinterimperiod between ABLE and BAKER (Reference 6 . p. VII-Q-9). Shot BAKER ( 2 5J u l y ,0 8 3 5 )

24 July 1145SailedfromKwajalein. 25 JulyPanamlntreturnedtotheBikiniarea before the BAKER detonation. 1735 Anchored in berth 382. Bikini Lagoon, just inside Eneu Channel. Radioactivity in the water around the target array prevented Panamint from going into the lagoon for inspection. The observers were allowed to examine a target ship. Huqhes (DD-410). beached on Eneu Island to prevent it from sinking. The observers viewed Hughes at close range from small boats (Reference 6, p. VII-Q-10). 27 July 1820

12August 12August 13August 13August 14August 14August 15 August 15 August 16August 17August 18August 19August 20August 20 August 21August Note:

12 10

1500 1100 1300

1300 0900 1100 0900 0900 1300 0830 0900 0830 1300 0830 1300

9August

5 July 1700

Number men

OnD eoBpfoaarrtde d

1100 1100 1600 1100 1200 1100 1530 1130 1530 1100 1530 1400 1800 1530 1530 1500 1730 1600 0100 1500

0830 1300 0900 1400 0830 0830 0900 0900 0900 1600 0900

--

20 20 20 30 8 20 20 20 20 30 20 "

-_ 40 40 20

--

"

"

"

- - l n d l c a t e s" n ov a l u eg l v e n . " 1, Parche.

Source: Reference

T a b l e A.8

T o p s l d es h l p b o a r dc o n t a m l n a t l o n (R/24hours)aboard USS Parche

(SS-384). Left Bikini for Kwajalein(Reference p. VII-Q-10).

6, Oate

Bow

Average Amldshlps Stern

USS PARCHE (SS-384) 5.2

31 J u l y 1 August 2 3 August August 6 1.6a 0.80.6 0.6August 7 2.5 0.4 8 August August 9 0.3 10August 0.2 0.2 12August 14August 0.12 T a s kU n l ta n dF u n c t i o n 0.2 15August The submarine Parche was a member of TU 1.2.4 17August 0.15 (Submarine Unit), Submarine Division 112, serving 18August 0.08 as a target vessel. Its crewAugust was evacuated before 0.2 20 Crew S l z e : 61 B l k l n4.1 lA t o l lA r r i v a l : 22 May 1946 August B l k l nA l t o lD l eparture: 22 August 1946 Crew L o c a t l o nf o rS h o t ABLE: USS B o t t l n e a u( A P A - 2 3 5 ) Crew L o c a t l o nf o rS h o t BAKER: B o t t l n e a u Shot ABLE L o c a t t o n 1:, 3 6 6y a r d s( 1 . 3 km) SSW Shot BAKER L o c a t l o n 1:, 5 8 0y a r d s ( 1 . 4 km) SW O e c o n t a m l n a t l o Ln o c a t l o n : San F r a n c l s c o ScrappedJuly1970

each shot. The Electronics Group had installed equipment for electronic experiments aboard it. The group monitored 15 separate pieces of radio and radar equipment aboard the boat.

3.5 3.5 3.0 2 .o 1.6

0.8 0.b 0.57

0.5 0.5

0.8b 0.35

0.3 0.50 0.2 0.2 0.2 0.2 0.1

0.05 0.1

0.71

0.80 0.40 0.27 0.322 0.211 0.236

Note: a g e l o wd e c k sr e p o r t e dr a d l o l o g l c a l l ys a f e openedbAugustexceptfortheconnlngtower ( 0 . 3 R / 2 6h o u r s )a n dm a t nl n d u c t l o np l p e( 2 . 0 ( R / 2 4h o u r s ).

Shot ABLE ( 1J u l y ,0 9 0 0 )

2 July 0935

5.1

ParchereportedGeigersweet(Reference 6. p. VII-I-A-24).

Source: Reference

1155 Teams A and B reboarded.

375

4.

when

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 USS Palmyra (ARS[TJ-3) 25 J u l y

USS Panamint(AGC-13)

”.

1200

1255 1335 26 July 0852 1602 1837 21 July 1012

1336

1450

28 July 1154 1435 1440 1618 1710 1830 29 July 0755 0935

1011 1125

30 July 0920 1200

1448 1520 2330 31 July 1620 1920

Directed to have two boats made ready with cutting equipment and to report to Reclaimer for instructions (Reference 6. p.VII-1-543). One cutting boat (LCPR) was returned to Palmyra before entering the target array. An officer with a 5-man worklng party left the ship for the target area. Working party returned to ship.

2 August 1250 1305 1620 1630 1850 3 August 0932

Freshwatertank and intaketestedfor radioactivity and foundto be clear. 13 August Directed to stand clear until Reclaimer 0940 passed through anchorage area with target ship USS Hushes (DD-410). 20 August Anchored at berth 344, Bikini. 0855 Directed to send an LCM to pick up an obstruction buoy and replant it on 4-1/2 fathom (8.2-meter) shoal off north end of Eneu (Reference 6, p. VII-I-21-B). Directed to send an LCM to beaching area to assist in beaching target ship U a 6. p. VII-IFallon (APA-81) (Reference 23-B). Directed to have an LCH plant anchors for Fallon (Reference 6. p. VII-I-24-B). Directed to have two LC% ready to assist in berthing target submarine USS Dentuda (SS-335) (Reference 6. p. VII-I-30-B). LCH #2 left ship. LCM #3 left ship. Anchored 450 yards (411 meters) south of berth 380. LCM #3 returned. LCM #2 returned.

21 August 0815 25 August 1403

LCM #2 departed with 30 cases of dynamite for blasting on Eneu Island. LCH #3 departed with a salvage party. Moored in berth Q. LCM #3 and salvage party returned. Moored 500 yards (451 meters) south of berth 380. Anchored in anchorage M. Radsafe section representative came aboard for temporary duty. Target vessel LCI(L)-615 moored to starboard. LCI(L)-615 underway. Sank radioactivespring fire.

buoybyrifle

30 August 0920 1355

LcI(L)-615 came alongside. LCI(L)-615 underway.

5 September 1815

Underway to Kwajalein.

6 Septembet

Arrived at Kwajalein.

7 September 1450

Radsafe Radiological Clearance Board reported aboard and commenced examination of ship and personnel.

Directed to have boat take a series of USS PANAMINT (AGC-13) soundings around Fallon and Dentuda (RefCrew Slze: 591 erence 6 . p. VII-I-36-B). Blklnl Atoll Arrlval: 29 June 1946 Directed to place obstruction buoy In Blklnl Atoll Departure: 27 July 1946 area of sunken target ship USS Saratoqa Shot ABLE Locatlon: mark mastand afterend of 18 nml ( 3 3 km) NNE (CV-3)to island (Reference 6, p. VII-I-38-€3). Shot BAKER Locatlon: 9 nml (17 km) ESE Decontamlnatlon Locatlon: Los Angeles Directed to have an LCM prepared and at Operatlonal Clearance: 22 November 1946 high tide to swing stern of Dentuda clear Flnal Clearance: By 22 November 1946 of Huqhes (Reference 6. p. VII-I-39-B). Some Palmyra personnel were directed to Task Unlt and Functton inreport to USS Hender (ARSD-2) with Panamint. an amphlbious force flagship.was a memstructions on planting submarine mooring ber of TU 1.3.3 (Observers Unit). Panamint carried buoy. aboard it United Nations representatives. civilian scientists. Congressional representatives, and specialpressrepresentatives.Becauseofthe LCM #2 left Palmyra. press observers. television transmitters and reLCM #2 returned: crew was contaminatedby ceivers were placed aboard the ship. It also had radioactivity and ordered to change and special equipment for reflectivity measurements. washclothesand ‘shoes andtotake shovers. Anchored in berth Mike. Shot ABLE (1 J u l y, 0900) DispatchedanLCPRwithadynamiting party to capsized target vessel LCT-1114. 29 June LCPR and dynamiting party returned. 0930Arrived at Bikini. p.m. Nonparticipating observers boarded and inspected target ships Naqato.USS Nevada (BB-36). and USS Independence (CVL-22). LCM #1 with 14 men left to haul Huqhes’ stern off Dentuda. 30 June LCM #1 returned. 1100 Put toseatotakeupitsstationfor shot ABLE.

374

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 USS Palmyra ( A R S [ T J - 3 )

USS Ottawa (AKA-101) USS OTTAWA (AKA-101) Crew Slze:

unit included selecting beaching areas, facilltating salvage of damaged ships, performing all underwater work involving divers both before and afterthetests.buoyplacement.flrefighting, and general salvage work. As a floating salvage base, Palmyra carried assorted salvage equipment and housed salvage personnel.

67

Blklnl Atoll Arrlval: 20 March 1946 Blklnl Atoll Departure: 2 August 1946 Shot ABLE Locatton: 35 nmt (65 km) €NE Shot BAKER Locatlon: 25 nml (46 km) ESE Decontarntnatlon Locatlon: Pearl Harbor Operatlonal Clearance: 13 September 1946 Flnal Clearance: 13 September 1946

Shot ABLE (1 July, 0900) 30 June 1500

Task Unjt and Functlon

Ottawa, an attack cargo ship, was a member of TU USS Rolette 1.3.1 (Transport Unit). Ottawa and (AKA-99) were loaded with 200 seabees and construction material at Port Hueneme before sailing 1 July 0858 for Bikini. At Bikini, they served as barracks and material stores ships for the Seabees. Shot ABLE (1 July, 0900)

0905

30 June 1249UnderwayinaccordancewithCJTF1Op Plan 1-46 for operation area MdCmOn.

1207 1326

1 July 1807 Anchored in berth 336, Bikini.

2 July 1554 Anchored in berth

1327 1425

35, Bikini.

Shot BAKER (25 July, 0835) 24 July 1640

1435 Underway from Bikini Atoll in accordance with CJTF1 Op Plan 1-46.

1520

25 July 1749

Anchored in berth 32. Rongelap Atoll.

1540 1646

28 July 0952 1638 1837

Underway for Bikini Atoll. Anchored in berth359, Bikini. Underway from Bikini to Rongelap.

1800 2000

29 July 0631

2 July 1326 Anchored in berth32, Rongelap Atoll.

30 July 1753

Underway for Bikini.

31 July 0709

Anchored in berth35, Bikini.

1430 1600 1605 1650 1655

2 August 1600

Underway from Bikini to Port Hueneme, California. USS PALMYRA (ARS[T]-3)

Crew Slze: 299 8lklnl Atoll Arrlval: By 1 June 1946 Blklnl Atoll Departure: 5 September 1946 Shot ABLE Locatlon: 28 nml (52 km) ENE Shot BAKER Locatlon: 12 nml (22 km) SE Decontamtnatton Locatton: San Franctsco Operatlonal Clearance: By 22 November 1946 Flnal Clearance: By 4 January 1947

4 July 1045

Joined formation, took aboard personnel engaged in last-minute work off Ionchebi and Eneu. In preparation for the flash from atomic bomb ABLE. all hands covered their eyes t o prevent blindness. Explosions were observed in Bikini Lagoon, fires were evident i n target vessels. Received dispatch from CTU 1.2.7 to remain in reentry area Able. Ordered to send a boat to transfer boarding team from USS Achomawi (ATF-148) to USS Reclaimer ( W - 4 2 ) (Reference 6. p. VII-I-8-A). Anchored in berth Able. Bikini. One officer with a 2-man working party left the ship in boat #4 with two burning outfits [to cut anchor chains] for target vessel YO-160. Boat #6 sent t o ReClaiIWK €OK assignment to boarding team by order of CTU 1.2.7. ‘Boat #5 left the ship t o inspect boat pool moorings. Boat #5 returned. Was requested t o move KT-1420 100 yards (91 meters) offshore to prevent beaching (Reference 6,p . VII-I-16-A). Boat #4 returned. Boat #6 returned. L C M #1 left to assist in beaching target submarine USS Skate(SS-305)onEneu

Island. LCM #2 left to assist beachingSkate. Individual sent to Reclaimer for examination after being exposed to radiological contamination. LCM #2 returnedt o the ship. LCH #1 returned to the ship. Indivldual sent to Reclaimer for examination was returned to the ship and declared normal in all respects. Shifted to berth 141A.

Palmvra had no further contact with target vessels until BAKER. Shot BAKER (25 July,0835) 24 July 1245Radiologicalmonitor c a m aboard. 1249UnderwayfromBikiniinaccordancewith CTU 1.2 Op Order 1-46.

Task Unlt and Functlon Palmyra. a salvage craft tender. was the flagship 25 July of TU 1.2.7 (Salvage Unit). The duties of this 1130AnchoredinBikiniLagoon.

373

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 USS Oneota (AN-85)

24 August 1045 1155 1322 1335 25 August 0914 0924-1203 1205 1223 1618 1635 1747 1755 1814 26 August 0851 0907-1020 1029 1052 1605 1627 1832

USS

aboard to obtain surface weather reports when any of the ships were absent from the Bikini area (Reference 6, p. VII-1-13-01. Finally, within the constraints of its limited communications faciliair trafficcontrol ties.assisted inlocal (Reference 6. p. VII-I-9-P).

Underway to change anchorage. Anchored in berth 116, Bikini. Underway to mooralongside Fulton. Moored portside to Fulton. Underway from Fulton. Moored to LST-661 to furnish power for hoisting anchor. Underway to assigned anchorage. Anchored in berth 116, Bikini. Underway to alongside target ship UT-52 to assist in hoisting its anchor. Tied up alongside LST-52 port to port. Began supplying power to LST-52. Underway from alongside LST-52. Anchored in berth 116 in Bikini Lagoon. Underway to furnish power andaidin hoisting anchor of LST-52. M o o r e d to LST-52 to furnish power for hoisting anchor. Underway from LST-52. Moored to USS Etlah (AN-79). Underway to go alongside target ship E Ralph Talbot (DD-390) to take i t in tow. Moored to Talbot to take it in tow. Underway from Bikini with Talbot in tow for Kwajalein.

Shot ABLE ( 1 July, 0900) 30 June 1648

0727 1530 1921 2 July 1042

1155 1412 1424

30 August-5 September Operated in Kwajalein performing routine buoy-layingduties. Not involvedwith target vessels during this period.

6 September 1949 Underway

for Guam.

7-12 September En route Kwajalein to Guam. 13 September Arrived at Guam.

Nan for

On station at Point Nan. Assumedstationastern of USSSaidor ("E-117). Anchored in berth 285, Bikini.

Anchored in berth 22.

Shot BAKER (25 July, 0835) 24 July 1615UnderwayfromBikiniAtoll with CJTF 1 Op Plan 1-46. 25 July 0808

0835 Anchored Talbot. Proceeding to USS Enoree (AO-69) to take on fuel. Moored to starboard side of Enoree. Underway to assigned anchorage. Moored in berth 29 at Kwajalein.

Underway from Bikini to Point shot ABLE.

1 July

27-28 August En route to Kwajalein. 29 August 1030 1040

Orca (AVP-49)

0843

in accordance

Commenced circling counterclockwise using 8Oleftrudderin accordance with Instructions contained in CJTF 1 Op Plan 1-46. Observed underwaterexplosion of atomic bomb in Bikini Lagoon. DepartedfromPointNan,

26 July 1410 Anchored

in berth A. Bikini Atoll.

Following BAKER, many seaplanes landed near 0 3. 29 July 0945

Anchored in berth P. Bikini.

30 July 0849

Anchored in berth 22.

2 August 1805

Anchored in berth 384.

3 August 0806 1235

1717

Anchored in berth 22. ShiEtedfuelto portfor scraping waterline. Anchored in berth 384.

purpose of

USS DRCA (AVP-49)

Crew S i z e : 215 Biklnl Atoll Arrlval: 7 Hay 1946 Blktnl Atoll Departure: 12 August 1946 Shot ABLE Locatlon: 22 nml (41 k m ) N Shot BAKER Locatlon: 22 nml (41 km) N Decontamlnatlon Locatlon: Pearl Harbor 1 1 December 1946 Operattonal Clearance: FInal Clearance: 13 December 194b Task Unlt and Functlon The small seaplane tender Orca served in TG 1.6 (Naval Air Group) as a terminal for the seaplane O f ~ l shuttle between Ebeye and Bikini islands. was also prepared to provide air-sea rescuein an emergency. It provided turnabout and tacking service for VW-32. A one-man aerological unit was

4 August 0806 1631

Anchored in berth 22. Anchored in berth 384.

5 August 0805 1637

Anchored in berth 22. Anchored in berth 384.

6 August 0751 1646

Anchored in berth 22. Anchored in berth 384.

7 August 0751

Anchored in berth22.

12 A u g u s t 1449

Underway from Bikini to Kwajalein.

372

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 USS Oneota (AN-85)

USS Oneota (AN-85)

Directed to proceed to the vicinity of USS Kenneth Whitinq (AV-14) to embark a special instrumentation team (Reference 6, p. VII-I-6-B). Anchored in lee of Eneu Island.

7 August 1745 1845

Underway t o shift berths. Anchored in berth 88. Bikini.

8 August 1812

Anchored in berth 31, Bikini.

26-27 July

Anchored in lee of EneuIsland.

9 August

Anchored in berth 31, Bikini.

28 July 1555 1635

Underway to change berths. Anchored in unidentified berth in Bikini.

25 July 1129

1810

29 July 0805 0935

0945 1017 1155 31 July 0745-1415

1120

1300 1421 1426

1 August

0750-1530 1530 1543 1620

2 August 0745 0815 1055 1345 1744 1810 3-6 August

Underway. Moored to raft of outermost instrumentation gear station. Hauled gear aboard. Underway to assigned anchorage. Anchored in berth 380, Bikini.

10 August 0745 0809

Underway to shift berths. Moored portside of ATA-185 to the portside of USS Pulton (AS-11) in order to have repairs made on the #2 auxiliary generator.

11-12 August fbored to portside of ATA-185 to portside of Fulton. awaiting repairs. 13 August 0938

0950 Underway to instrumentation stations. Reported that it would take one more day 14 August to complete the recovery of the vertical 1252 stations. Oneota also reported that its radsafe monitor had been ordered removed 1635 from the ship. CTU 1.2.7 reported to Radsafe that removal of the monitor from Oneota without 15-18 August prior notice made it Impossible to oper19 August ate the ship. 0728 Radsafe reported that i t had not ordered 0749 the removal of the monitor. 1015 Anchored in berth 54. Bikini. OneOta was directed to discontinue oper1148 ations for the day because the monitor 1345 6, pp. VIIhad been removed (Reference 1420 I-60-B and VII-1-61-8). 1703 Directed to recover vertical stations as 1718 requested by the Technical Director. Upon completion. it was directed t o CTU 1.8.1 20 August for repairs to auxiliary generator (Ref0800 erence 6, p. VII-1-6533). Underway, picking up instrumentation stat ions. 0837-1035 Ceased operations for the day and proceeded to anchorage. 1040 Anchored in berth 54, Bikini. Reported having recovered three vertical 1102 stations and that there were probably nine more to pick up. However, one was 21 August fouled and two were on the bottom. The 1512 radioactivityoftheinstrumentshad slowed up operations. The estimate of 1628 total radioactivity received was 0.1 R (Reference 6. p. VII-I-70-B). 22 August 1300 Underwaytotargetarraytocollect 1402-1705 gauges. Began collecting gauges. 1750 All gauges aboard, secured operationsfor the day. Anchored in lee of Eneu Island after receiving water fromUSS Yildcat (AU-2). 23 August Underway to shift berths. 0840 Anchored off Eneu Island. 0850 Anchored off Eneu Island.

371

Underway to shift berth with ATA-185 tow on starboard side. Anchored in berth 231A. Bikini.

in

UnderwaytomooralongsideYildcatto take on freshwater. Anchored in berth 58. Blkini. Anchored in berth 58. Underway to pick up anchor. Anchored in berth 95. Underway to locate anchor in wet storage in vicinity of Ionchebi Island, Bikini. Anchored in lee of Ionchebi Island. Underway to shift berths. Moored to portside of LCT-1184 to portside of Palmyra. Underway to shift berths. Anchored in berth 33, Bikini. Underway to go alongside targetship Carteret(APA-70)tosupplypowerto hoist its anchor. Floored to Carteret to supply power to hoist motor. Underway from Carteret to assigned anchorage. Anchored in berth 33, Bikini.

l e e of Ionchebi Island to Underway to place anchor in wet storage. Anchored in unidentified berth in Bikini. Underway to go alongside target ship LST-133 to assist in hoisting its anchor. Alongside LST-133 to furnish power for hoisting Its anchor. -red next to USS Severn (AO-61) to take on freshwater. Underway from alongside Severn to as-

signed anchorage. Anchored in unidentified berth in Bikini.

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 USS Oneota (AN-85)

USS O ' B r i e n (OD-725)

Shot BAKER ( 2 5J u l y ,

24 July 1232 25 July 0935-1129 1515 1923 2150 26 July 0402-0505 1225 1717 27 July 1613 28 July 1619

1338

0835)

Underway for area Hudson for shot BAKER.

1412

Conductedradiologicalpatrol of Eneu Channel entrance. Conunenced patrolling area Studebaker. Comnenced downwind radiological patrol. Conmenced radiological survey.

1430

0937 1114 1152 1355 1406 2 August 0813 0900 1516 5 August 0742 1738 8 August 1218

1524 1537 1542

Conducted radiological survey. Anchored in berth 316, Bikini. Anchored in berth 357. obtaining radiological data.

1635 1725

Shifted to berth 370. 1737 1855 Anchored in berth U, obtaining radiological data.

30 July 0800

1452

Relieved USS Fall River (CA-131) as Harbor Entrance Control Vessel ( H E W ). Anchored 600 yards (549 meters) northwest Of berth 386. Relieved as HECV. b o r e d In berth 305. Relieved USS Laffey (DD-724) asH E W. Anchored in berth 386.

2 July 0708 0730 0815 0816 0854 0855 0925 0927-0942 0935 0944 1040 1122 1551

Relieved of duties as H E W. Anchored in berth 116s. Anchored in berth H-North. Departed Bikini Lagoon to conduct firing exercises. Anchored in berth H-North.

3-4 July 5 July 1334 1455

Departed Bikini; underway on oceanographic cruise en route to Pearl Harbor.

1602 1612

Placed a boarding team on target ship USS Geneva (APA-86) (Reference 6. p. VIII-Ea-A). Reportedfires on USS Bladen (APA-63) and USS Bracken (APA-64) (Reference 6. p. VII-I-9-A). Pronounced Geneva Geiger sweet (Reference 6. p. VII-I-10-A). Placed boarding team on USS Niaqara (APA87). Reported Niaaara Geiger sweet (Reference 6. pp. VII-I-lla-A and VII-I-12-A). Placed boarding team on Bladen. Reported a small fire on the afterdeckhouse of Bracken (Reference 6. p. VII-I13-A). Placed boarding team on target ship Fillmore (APA-83). Placed boarding team on target ship Hayrant (DD-402). Placed boarding teamon Bladen. Anchored in lee of Eneu Island, Bikini. Underway to pick upboarding party. Boarding party aboard. Moored to the starboard side of Bracken. Placed boarding team on Bracken. Boarding team returnedto.-nO Underway to target submarine USS Parche (S-384). Moored to Parche. Boarding party aboard Parche. Reported Parche Geiger sweet (Reference 6, p. VII-I-24-A). Underway from Parche. Boarding party left in a boat. Anchored in leeof Eneu Island. Reported Fillmore GeigerSweet (Reference 6. p. VII-I-33-A). Anchored in lee of EneuIsland. Underwav from anchoraae. Moored t o an LCT portside of USS Palmyra (ARST[TI -3 Unde G a y . Anchored 800 yards (720 meters) astern target ship USS LST-661.

.

USS ONEOTA (AN-85) Crew S l z e : 45 BlklnA l tolA l rrlval: By 2 A p r l1l 9 4 6 B l k l nAl t o lDl e p a r t u r e2: A 6 u g u s1t 9 4 6 Shot ABLE L o c a t l o n1: 8 nml ( 3 3 km) SE Shot BAKER L o c a t l o n1: 8 nml ( 3 3 km) SE D e c o n t a m l n a t l oLno c a t l o nP: e a rHl a r b o r O p e r a t l o n aCl l e a r a n c e1:1 December 1946

6 July 1004 1020 1045 1120 1247 1310

1825 1858

Task U n l t and F u n c t l o n

Oneota. a net laying ship, served in TU 1.2.7 (Salvage Unit). Its main duties for CROSSROADS included salvaging damaged target vessels after thetests,performingemergencyrepairs. and fightingfires. These tasksrequiredboarding crews from Oneota to inspect target vessels for damage and radiologicalcontamination. Shot ABLE ( 1J u l y ,

Underway from LST-661. Laying off near Palmyra. Proceeding to target array. Moored to mooring buoy 13. Underway. lloored next to USS Rolette (AKA-99) to receive clampand chain for mooring buoy. Underway from alongside Rolette. Anchored in berth 143A, Bikini.

7-17 July

Operated in Bikini Lagoon laying mooring buoys in preparation for test BAKER.

18-19 July

Departed lagoon.

20-23 July

Moored in Bikini Lagoon, laying instrumentation gear.

0900) Shot BAKER ( 2 5 J u l y, 0835)

1 July

1222 Entered Bikini

Lagoon.

24 July 1320Joinedformationleavingthe

370

lagoon.

title: Page:Operation Crossroads 1946.pdf/375


text:
Page:On the Influence of Carbonic Acid in the Air upon the Temperature of the Ground.pdf/3

238 absorption" . This view, which was founded on too wide a use of Newton's law of cooling, must be abandoned, as Langley himself in a later memoir showed that the full moon, which certainly does not possess any sensible heat-absorbing atmosphere, has a "mean effective temperature" of about 45° C.

The air retains heat (light or dark) in two different ways. On the one hand, the heat suffers a selective diffusion on its passage through the air; on the other hand, some of the atmospheric gases absorb considerable quantities of heat. These two actions are very different. The selective diffusion is extraordinarily great for the ultra-violet rays, and diminishes continuously with increasing wave-length of the light, so that it is insensible for the rays that form the chief part of the radiation from a body of the mean temperature of the earth Langley, 'Prof. Papers,' No. 15, p. 151. I have tried to calculate a formula for the value of the absorption due to the selective reflexion, as determined by Langley. Among the different formul examined, the following agrees best with the experimental results: –

I have determined the coefficients of this formula by aid of the method of least squares, and have found –

$$a$$ represents the strength of a ray of the wave-length $$\lambda$$ (expressed in $\mu$) after it has entered with the strength 1 and passed through the air-mass 1. The close agreement with experiment will be seen from the following table: –


text:
Page:Crotchet Castle - Peacock (1831).djvu/79

 ! Rarity of rarities! A Thames salmon caught this morning. Now, Mr. Mac Quedy, even in fish your Modern Athens must yield. Cedite Graii.

Eh! sir, on its own ground, your Thames salmon has two virtues over all others; first, that it is fresh; and, second, that it is rare; for I understand you do not take half a dozen in a year.

In some years, sir, not one. Mud, filth, gas-dregs, lock-wiers, and the march of mind, developed in the form of poaching, have ruined the fishery. But, when we do catch a salmon, happy the man to whom he falls.

I confess, sir, this is excellent: but I can-


text:
Page:Operation Crossroads 1946.pdf/374

 USS Nlaqara ( A P A - 8 7 ) 29 J u l y

USS O ' B r l e n ( 0 0 - 7 2 5 )

Frame No.

0826 The commanding officer and reboarding Teams A and B reboarded the ship and commenced inspection of it: no apparent damage was noted. 1535Underwaytoshiftberthsinthelagoon. 1601Anchoredinberth381. 1615 The remainder of crew returned on board with baggage and gear. Inspections conducted for evidence of radioactivity 0 . 4 R/24 adjacent to the ship's side revealed about hours. which decreased in intensity on board to a point 5 feet (1.5 meters) from the sides to 0.1 R/24 hours. The average reading of compartments below the waterline was 0.05 R/24 hours (Reference 2). Crew S l z e : 30 July

1 August Afternoon

2 August

3 August

4 August

5 nugust

51 68 82 93 107 110 122 135

Port 0.011 0.060 0.052 0.053 0.042 0.079 0.096 0.036

Starboard 0.012 0.048 0.024 0.018 0.072 0.072 0.048 0.012

USS O'BRIEN ( 0 0 - 7 2 5 ) 237

BlklnA l tolA l rrlval: 15 June 1946 All decks and bulkheads in compartments B l k l nA l t o lD l eparture: 8 August 1946 above the waterline were washed down with Shot ABLE L o c a t l o n : 4 3 nml (80 km) SW Shot BAKER L o c a t l o n 1: 2. 5 nml ( 2 3 km) W soap and water. The sides of the ship San F r a n c l s c o were also scraped to a distance of aboutO e c o n t a m l n a t l o Ln o c a t l o n : 5 feet (1.5 meters) below the waterline O p e r a t l o n aCl l e a r a n c e : 6 November 1946 F l n aCl l e a r a n c e : 19 December 1946 to remove marine growth. Task U n l ta n dF u n c t l o n

Underway and put to sea to wash the ship's sides.ThisreducedtheGeiger readings approximately40 percent. Speed increased to 15 knots (28 km/hr); however, this did not reduce the radioactivity further. Upon reentry into Bikini. hogging lines with scrapers attached were led around the ship and the to remove bottom scraped in an attempt some of the marine growth.

The destroyer O'Brien (DD-725) served in TG 1.1 (Surface Patrol), Destroyer Division 71. Before its arrival at Bikini, O'Brien had special oceanographic and radiological equipment installed aboard. It conducted radiological patrols. including monitoring the area just inside the lagoon ent rance. Shot ABLE ( 1 J u l y 0, 9 0 0 )

1 July

Monitor made inspection, finding the ship below 0.10 R/24 hours throughout. Maximum radioactivity on a portion of the ship's hull adjacent to gangway: reading there was 0.095 R/24 hours.about0.05 R/24 2 hours higher than the rest of the ship. Safe distance from Niaqara's hull reduced 1 foot 0.3 from 5 feet (1.5 meters) to meter). 3 Continuedtoscrapehull.Duringthis timetheentirebottomandwaterline area were scraped. 4 Niaqara was again inspected. At this time the monitors declared the ship radiologically safe on all parts and gave It the radsafe clearance required to depart from5 Bikini.

Steaming on course in accordance with JTF 1 Op Plan 1-46. Commenced radiological patrol. 1414 1815 Stopped all engines to obtain radiological data. 20 18 Laying to to collect radiological data.

July 0620 July

July

July 0210 0647 0742

Due to the position of Niaqara's anchorage, materials f r o m decontaminated ships were washed against it. To its sides the prevent these materials from clinging to 0938 waterline was washed down with firehoses each day for 1000 a week, and the bottom was periodically scraped. At the end of a week. another Geiger inspection showed a 9 July maximum of 0.082 R/24 hours at frame 68. The rest of 1306 the ship was below 0.018 R/24 hours (Reference 4 ). The results of one inspection showed the following (R/24 9-14 July hours) (Reference4 ) : 14 July Starboard No.Frame 0931 1410 14 0.036 0.042 28 0.054 0.018 15-22 July 42 0.024 0.015

369

Arrived on station: commenced patrolling station. At 0038, 0211, 0341, 1006, 1245, 1543, and 2134, laying to on station to obtain radiological data. At0151. 0623, 1005. 1221, 1446, 1835. 2054, and 2345 obtained radiological data on station. Took radiological data on station. Entered Bikini Lagoon. USS Enoree (AO-69). Moored portside to berth 30. Underway to anchorage. Anchored in berth 190 North. Bikini. Underway to depart lagoon. Took hydrographic data. Reentered Bikini Lagoon. Anchored in berth 910. Bikini. Collected radiological and hydrological data from Bikini and surrounding waters.

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Page:Operation Crossroads 1946.pdf/373

 USS New York ( 8 8 - 3 4 )

USS Nlaqara ( A P A - 8 7 )

Table A.6. Decontamlnatlon results on New York (88-34)topslde maln deck aft.

Readings (R/24 hrs) frame N o.

7 Aug

8 Aug

9 Aug

10 Aug

Final Clearance: 10 November 1946 Scrapped In 1950 Task Unlt and Functlon Niaqara, an attack transport, served in TU 1.2.6 (Merchant Type Unit), Transport Division93, as a target vessel. Its crew was evacuated before each shot. The Quartermaster Unit had placed food and clothing aboard it for experimental purposes. Shot ABLE I 1 July, 0900)

1.6 1.2 1.6 70s 70P1.3 1.2 1.2 1.5 3.0 2.0 0.8 80s 80P 1.6 3.0 1.3 90s 2.4 0.5 0.9 1.7 1.0 0.9 90P 100s 2.6 0.1 0.6 0.65 lOOP 1.7 0.8 0.9 110s 1.5 1.3 1.0 ll0P 1.2 2.01.5 2.0 0.8 0.95 120s 120P 1.8 1.0 0.9 130s 1.8 1.5 1.0 130P 1.6 13.0a 0.8 Stern 0.99 1.5 2.0

1.3 0.9 0.9 0.6

30 June 0805 1528

1 .o 1 .o

0.9 1.3

1 July 1307

0.8

0.6 0.3 0.7

1335-1358 1524

-"

1610

Commenced evacuation of Niagara crew to Bayf ield. Bayfield,withallpersonnelaboard, underway to operating area about 18 n m i (33 km) east of Bikini Atoll. USS Oneota (AN-85) sent a team aboard

Niaqara. ATA-192 €ought a fire on Niagara without boarding it (Reference 6. p. 7-I-A-8). Oneota Team 9 reported Niaqara Geiger sweet (Reference 6. p. 7-I-A-12). Niaqaradeclaredfreeofradiological contamination.

Note: 2 July 1205

aPalnt chlpplngs. Source: Reference

4.

1425 21 August 0800

The captain and Team A (six officers, nineteen enlisted men. and one radiological monitor) came aboard t o inspect and open Niaqara. enTeam B (four oEficers and twenty-€our listed men) came aboard to light off the boilers. The radiological monitor returned to (Iss Haven (AH-12). Team C (all remaining men and gear) came a k a rd

Four teams aboard for 2 hours each. 1559 Yidqeon (ASR-1) alongside to starboardtoassistinhoistingstarboard 1715 anchor. Ordnance inspection team aboard. Anchor detail aboard. 0830 Reclaimer came alongside to port to fur0835 nishelectricalpower.Targetvessel Niaqara's crew lived aboard ship until 24 July. LCI(L)-615 came alongside to starboard Shot BAKER (25 July, 0835) to furnishpower. Reclaimer and LCI(L)-615 cast off. 1220 24 July Ordnance detail left ship. 1235 Commanding officer and the last evacua1036 Starboard anchor was housed. 1430 tion group were received on board EayWidqeon cast off. 1530 field. Anchor detail left ship. Average topside 1545 reading 0.4 R/24 hours. 25 July CTU 1.2.7 reported Niaqara radiologically 1129 22AugustTowedtoKwajalein. 5 . p. 6clear €or boarding (Reference D-10). 24 AugustArrivedatKwajalein. 1210-1223 USS Preserver (ARS-8) boarding team on Niaqara(Reference 6. pp.7-1-8-7and 28AugustNewYorkdecommissioned. 7-I-E-E). 1224 Radsafe reported Niaqara Geiger sweet and New York was towed to Pearl Harbor, arriving on 15 recommended all teams be returned aboard. March 1947. Instrumentation Team #1 went aboard N&1240 qara (Reference 5. p. 6-D-11). USS NIAGARA (APA-87) 27 July 1022-1144 An instrumentation team boarded Niagara Crew Slze: 271 Blklnl Atoll Arrlval: 31 Hay 1946 (Reference 6. pp. 7-1-8-21 and 7-1-8-22). Blklnl Atoll Departure: 21 August 1946 28 July Another boarding team was placed on NACrew Locatlon for Shot ABLE: USS Eayfleld (APA-33) qaca. Crew Locatlon for Shot BAKER: Bayfleld Shot ABLE Locatlon: 3,318 yards (3.0 km) SSE 29 July Shot BAKER Locatlon: 3.060 yards (2.8 km) S The commanding officer and Team A left 0748 Decontamlnatlon Lacatlons: San Franclsco, Kwajaleln Bayfield to reboard Niagara. Operatlonal Clearance: 6 November 1946 USS

.

368

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Page:Operation Crossroads 1946.pdf/372

 USS New York (Be-34)

USS New York (BB-34) 29 J u l y 1212-1415 1634

30 July

31 July 1550

1 August 1025

3 August

5 August 1000-1500

6 August 1000-1300

7 August 0800-1500

8 August 0800-1545

9 August 0800-1545

100 men worked on the second deck and conslderable progress was made in cleaning up the second and third decks and the officers' quarters.

Washed down by .ATR-40 (Reference 6. p. 7-I-B-42). A radiologlcal monitor reboarded to take 6. p. 7-1Geigerreadings(Reference 8-46). Tolerance time had increased to 40 minutes.

10 August 0800-1545 Four teams were aboard for 2 hours each. The forecastle was again holystoned with boller compound, lye. and sand. Air castle and boat decks were washed down with boiler compound and lye: the main deck aft was washed down with saltwater (Reference 4).

Washeddown by ATR-40withahighpressure stream for 4 hours (Reference 6, p . 7-1-8-48).

ATR-40 reported New York was thoroughly foamed down using 430 cans of foam (RefTable A.5 shows the results obtained in reducing the erence 6. p. 7-I-E-62). forecastle's radioactivity by holystonlng with boiler compound, lye, and sand. USS Deliver (ARS-23) completed its inT a b l eA. 5D. e c o n t a m l n a t l o nr e s u l t s on U s spection of New York (Reference 6, p. New York ( B E - 3 4 )f o r e c a s t l e . 7-1 -8-67). Washed down thoroughly by US5 Preserver (ARS-8)using high-pressure streams. Qserver was to report Geiger readings from about 50 feet (15 meters) before and after washing (Reference 6, p. 7-I-B-77). Theinitialboardingteamboardedthe ship for decontamination operations. HaxNew imumradiationencounteredaboard York was 0.625 R/hr: average reading at the time of the last survey was 0.167 R/hr. a tug. Washdown procedure completed by Captain boarded ship with initial boarding team for inspection of shlp.

Readings(R/24 Frame No.

Bow 1 os 1 OP 20s i0P 30s 30P 40s 40P

hrs)

7 Aug

8 Aug

9 Aug

10 Aug

1.6 1.7 1.6 1.6 1.3 1.5 1.3 2.0 2.0

0.1

0.1 0.5 0.5 0.5 0.5

0.6 0.45 0.5 0.5 0.5

0.6

0.5 0.62 1.2 1 . 30 . 6 1.2 1.1 1.0

0.6

0.5

0.5

0.6 0.7

0.5 0.5

S o u r c eR:e f e r e n c4e.

The first decontamination teams from the ship's company boarded. Four teams were used and were relieved every 2 hours and returned to Rockbridqe. The day was spentThe reduction jettisoning useless, highly radioactive deck aft from in Table A.6 materials. particularly debris and wood items. One group spent the day scoutlng 14-15 August forboilercompound,lye.cornstarch, scrubbers. gloves, boots. etc. Freshwater 0800-1600 wasprovldedbyRockbridqe.Byearly deternoon water was obtained from the 16 August flremain and the topslde was washed down, 0800 to with particular attentlon being paid the forecastle. 0830 1115 Four teams were aboard for 2 hours each. 1615 Necessary working materlals were now assembled and decontamlnation on the fore17 August castle began in earnest. Solutions of 1300-2000 boiler compound and lye were used, and the forecastle was washed down several times. Sand was obtained and holystoning 18 August 0800-1115 began. Cleaning up of the second deck was also started and numerous pools of water 1300-2000 removed, debris cleaned up, and hose gear 19 August straightened up. 0800-1100 0830-1500 Four teams were aboard for 2 hours each. 1300-1600 The forecastle was again washed d m and holystoned with boller compound. lye, and 20 August sand. Freshwater still had to be hauled 0800-1130 0900-1300 from Rockbridqe in cans. Approximately

367

in radioactivity on the topside main 1s reported one washing with saltwater

Four teams aboard for 2 hours each. Engineering party aboard to make connectlons to recelve power from Reclalmer. DSH inspection parties and ship inspection parties aboard to collect data. All parties left ship except an englneering party and pumping detail. All hands clear of shlp. Two teams aboard2-1/2 hours each. Pumping detail aboard. Two teams aboard 2-1/2 hours each. Pumping detail aboard ship. Pumping detail aboard ship. Four team aboard for 2 hours each. Pumping detail on ship. Anchor detail on ship. Pumping detail on ship. Two teams aboard for2-1/2 hours each.

Pumping detail on ship. Anchor detail on ship.

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 USS Newman K. Perry (00-883)

USS New York ( B B - 3 4 )

5 July 1621AnchoredinberthA-3.Rol. 1736UnderwayforBikini. 6 July USS Enoree (AO-69). 0737 Anchored portside to Bikini. 1013Anchored in berth55A. Roi Island.Kwajalein. 1645Underwayto

7 July 0810 Anchored at Kwajalein in berth A-6.

7. serving as a target vessel for CROSSROADS. Its crew was evacuated before each shot. Among the were foodand experimental equipment on board clothing (provided by the Quartermaster Unit) and free-piston recording gauges. Shot ABLE ( 1 July, 0900) 30 June 1425

Crew evacuated to Rockbridqe.

1 July

12 July 1730 Underway from Kwajalein to Bikini. 13 July 0809 Moored starboard side 1040Anchored in berth56.

1430 1615-1625

to Enoree. Bikini.

1648 Shot EAKfR ( 2 5 July, 0835) 24 July 0918 25 July 0650

1730 Underway for plane guard station. 1742 1750 Maneuvering to take plane guard station No. 1. 1847

27 July 1223 1327 1427 1650 29 July 1443 30 July 0958

Entered Bikini Channel to transfer photograhic supplies and acivilian technician 2 July 1159 to USS Mount McKinley (Am-7). Rejoined formation. Commenced laying t o 4 n m i (7.4 km) east of Bikini Channel entrance. 1400 Proceeded to screening station 2330 on Saidor. 1630 1820 Anchored in berth Mike, Bikini Atoll. 3 July 1130 Anchored in berth 55A. Bikini Atoll. 4-23 July

USS Reclaimer (ARS-42) noted a smoldering

6, fire amidships on New York (Reference p. 7-I-A-10). Reclaimer moved alongside New York and 6, p. extinguished the fire (Reference 7-I-A-15). Team reported the ready service anununltion on New York had overheated (Reference 6, p . 7-I-A-17). USS Clamp (ARS-33) sent a boarding team aboard. ClaFnp. Boarding team returned to C l a m p reported New Yock Geiger sweet: underway from the target ship (Reference 6, p. 7-I-A-18). C l a m p reportedNewYorkGeigersweet (Reference 6. p. 7-I-A-19).

Commanding officer and boarding team returned aboard ship. No radiation detectedexcepttelephoneradiummarker buttons. which were not test-related. Team B returnedaboardandcommenced opening up the ship. Team C returned aboard. Team D returned aboard.

A

Team E returned from Rockbridqe. Crew aboard ship.

1 August

0912 1119 2 August 1402

Moored to Enoree. Anchored in berth 55-A.

24 July 1125

Crew evacuated to Rockbridqe.

Anchored in berthF. Bikini Atoll.

4 August

1330

Shot BAKER (25 July, 0835)

Underway for Pearl Harbor from Bikini Atoll.

25 July 1000-1200 1720

Damage reported ( d m by stern). ReclaimerpassedclosetoNew York's portside. New York was very radioactive (Reference 6, p. 7-1-8-14).

9 August

1320

Moored Pearl Harbor.

28 July 0903

USS NEW YORK (88-34 1936 Crew Slze: 536 Blklnl Atoll Arrlval: 15 June 1946' Blklnl Atoll Departure: 22 August 1946 Crew Locatlon for Shot ABLE: USS Rockbrldqe (APA-228) Crew Locatlon for Shot BAKER: Rockbrldse Shot ABLE Locatlon: 1.547 yards (1.4 km) ESE Shot BAKER Locatlon: 920 yards (750 meters) ESE Oecontaminatlon Locatlon: Pearl Harbor Sunk 8 July 1948. 40 nml (74 km)SW o f Pearl Harbor Task

29 July 1100

Unlt and Functlon The battleship New York was a member of TU 1.2.1 (Battleship and Cruiser Unit). Battleship Dlvlsion

366

Reclaimer again passed New York. which was down slightly by the stern (Reference 6 . p . 7-1-8-28). CJTF 1 reported to Commander Rear Echelon (CWEARECH): "Further inspection of New York indicates about 1,800 tons increase in displacement with the center of gravity of additional water at Frame 103, reof about 4 feet. sulting in trim by stern Situation believed stabilized and ship in no danger" (Refecence 5, p. 6-D-33). radiological monitor boarded and obtainedareadingshowing20minutes tolerance on deck (Reference 6, p. 7-IB-40)A

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 USS Nevada ( 8 8 - 3 6 ) 3 July 1430-1650 1515 1730 1735 1800 1925 1930 1948 2030 2040

USS Newman K. Perry (00-883)

1630Commandingofficerand 90 menreturned Party of nineteen aboard. to Clymer. Reboarding party B boarded to jnspect lower decks and engineering plants. 12, 14-16 August Gunnery officer and party of ten gunner Small groups of non-Nevada crewmembers mates returned to ship to inspect all magazines. boarded each day, probably ship inspection teams. Captain with reboarding party A returned to Clymer. 13 August Boardingparty B. exceptforsecurity watch, departed for Clymer. 0930-1100 A radiological monitor and five enlisted men returned to Nevada to remove special Party of eight men came aboard to retest equipment. radioactivity of ship. Navigator and security watch of three o€flcecs and seventeen enlisted men came 17 August Nine men boarded. 0745 aboard for the night. Commanding o€ficer and 103 men boarded. 0915 Remainder of B partyreturned to Clymer. 1215 Captain returned to ship for the night. Team of88 men boarded. 1425 Radioactivity inspection party left ship: Team of93 men departed. 1715 ship found clear of radioactivity except Commanding officer and the remainder of those aboard departed. aft of frame 114on main deck.

With the exception of a 20-man security watch, Nevada 18 August remained evacuated. After several days of radiological monitoring and repair work performed by various boarding teams. Nevada was found safe for reboarding by its 19 August crew on8 July. Shot BAKER (25 July, 0835)

24 July 30 July 1116

Crew evacuated to Clymer. ATA-180 reported recovering instruments from Nevada (Reference6. p. 7-1-8-51).

Nevada’screwtransferredtoremanned USS Cortland(APA-75)for targetship transportation to Kwajalein. Towed to Kwajaleln by Preserver. Sevenfrom man anchor team aboard Preserver Nevada.

22 August

Arrived at Kwajalein.

27 August

Average topside reading 0.6 R/24 hours.

1 October

Average topside reading 0. 4 R/24 hours.

1 August 1049

Nevada was tobed to Pearl Harbor for radiological inInspection by gSS Deliver (ARS-23) was spection. arriving 15 May 1947. completed and revealed Nevada to be very radioactive. Deliver’s boarding team came back on board (Reference6, p. 7-I-E-68). USS NEWMAN K. PERRY (DO-883)

2 August

Deliver worked €or 1-1/2 hours on Nevada using high-pressure water hoses (Reference 6, p. 7-1-8-74).

7 August 1000-1015 9 August 0745 1135 1300 1645

Three-man team boarded for inspection. Commanding officer and 27 men boarded. Sixteen men returned to Clymer. Teams A and B boarded. A and B deCommanding officer and Teams parted; Gelger readings on quarterdeck 1.9R/24hours,forecastle1.5R/24 hours.

Crew Slze: 280 Blklnl Atoll Arrlval: 5 June 1946 Blklnl Atoll Departure: 4 August 1946 Shot ABLE Locatlon: 30 nmi (56 km) NNE Shot BAKER Locatlon: 10 nml (19 km) NE Decontamlnatlon Locatlon: San Oiego Operatlonal Clearance: 17 January 196’ Flnal Clearance: 25 January 1947 Task Unlt and Functlon The destroyer Perry was a member of TG 1.6 (Navy Air Group). Destroyer Division 51. Its primary mission was to serve as a plane guard for the aircraft carrierUSS Saidor (CVE-117).

Shot ABLE ( 1 July, 0900) The entire ship was not opened up nor o € time. 30 June completely inspected due to lack other work requiring immediate action, 1351UnderwayfromBikini. and the still relatively high radloactivlty. There were no items of major damage1 July apparentthatappearedtohavebeen 1900Anchoredinberth304,Bikini. caused by BAKER. However. the ship was still highly radioactive topside and in 2 July some spaces below deck (Reference 2). 1535Anchoredinberth55-A. 1 0 August

0745 1015 1130 1315

Commanding officer and 91 men boarded. Team of 23 men boarded. A group of 104 men returned to Clymer. A team of80 men boarded.

4 July 1613UnderwayenroutetoKwajalein. 5 July 1006

Underway 1249

365

Anchored in berth 13. Kwajalein. for Roi Island.

title: Page:Operation Crossroads 1946.pdf/370


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Page:Operation Crossroads 1946.pdf/369

 Naga t o

USS Nevada (88-36)

Shot ABLE (1 J u l y, 0900)

increasing. and the vessel continuing to settle. There was no change in tolerance (Reference 6. p. 7-1-8-46).

30 June

Crew evacuated to Rockinqham.

22 July 0958

30 July Clamp (ARS-33) reported a fire on 0200 Naqato sank in Bikini Lagoon. Naqato's forward No. 3 turret (Reference 6. p. 7-I-A-25). Naqato'screwwastransferredtootherCROSSROADS Clamp reported a fire on Naqato's portUSS Fall River ships. The majority was dispersed among (CA-131), USS Applinq (APA-58), and target ship U s side bow (Reference6. p. 7-I-A-31). Clamp reported Naqato's starboard quarter Salt Lake City (CA-25) on 4 August. radiologically safe. Clamp reported numerous small fires on Naqato. which it was instructed to exUSS NEVADA (66-36) tinguish. Crew Slze: 4 0 3 Clamp reported that the inspection of 6. p. 1-IBlklnl Atoll Arrlval: 28-29 May 1946 Naqato was complete (Reference Blklnl Atoll Departure: 19 August 1946 A-32). Crew Locatlon for Shot ABLE: USS Georqe Clymer (APA-27) Crew Locatlon for Shot BAKER: Clymer A fire was reported aboard Naqato. U X Preserver (ARS-8) was ordered to lnspect Shot ABLE Locatlon: 750 yards (686 meters)E and fight the fire i f i t could be loShot BAKER Locatlon: 1,030 yards (942 meters)ESE Decontamlnatlon Locatlons: Kwajaleln and Pearl Harbor cated.Preserverwasunable t o locate the fire and proceeded with its previous Sunk 31 July 1948, o f f Pearl Harbor assignments. Task Unlt and Functlon The battleship Nevada was a member of TU 1.2.1 Whi!eNaqatocrewmemberswereberthed (Battleship and Cruiser Unit). Battleship Division aboard Rockinqham, work parties boarded 9. It was the target ship for shotABLE. Its crew the target ship. was evacuated before each shot. It also housed several experiments including ammunition and poiNaqato's crew transferred from Rockinqham to USS Rockbridqe(APA-228).Awatch son gases for the Army ammunition experiment, representative items for the Army Signal Unit. team was placed aboard Naqato. foodandclothingfortheQuartermaster Unit, ball-crusher gauges. linear- and logarithmic-axis Seventy-five crewmembers were transferred recorders.andfouridentificationandsixteen to USS Chilton (APA-38) for transportadiaphragm peak-pressure gauges. tion to the United States west coat.

1352 1416 1508 1521

3 July 1325

4-7 July

1 July

12 July

16 July

USS

Remaining Naqato crewmembers returned to Rockinqham.

Shot ABLE f l July, 0900)

30 June 24

July

Shot BAKER (25 July, 0835) 21 July 1630

28 July 0945

1652

29 July 1015

1651

Crew evacuated to Clymer.

Watch team transferred to Rockinqham. 1 July 1018

Reclaimer (ARS-42) reported Naqato listing to starboard and settling by the stern. Naqato had a 1-hour tolerance from about 50 feet (15 meters) (Reference 6. p. 1-I-B-24). USS

1435 1133

2 July 1220 When Reclaimer passed Naqato to the starboard, it was down by the stern with an 80 starboard list. The steady increase 1256 in list and settling by the stern indlcated progressive flooding. Naqato was 1308 highly radioactive, precluding reboarding 1537 for pumping or towing (Reference 6. p. 7-I-B-28). 1541 ReclaimerreportedNaqato'smaindeck 1545 awash, listing to starboard. and down by 1605 the stern (Reference6. p. 7-I-B-34). ReclaimerpassedNaqatotostarboard. Naqato had taken on more list, was down 9 feet (8 meters) forward and6 feet (5.5 meters) aft, and had a toleranceof 1 to 1-1/2 hours (Reference6. p. 7-I-B-39). ReclaimerreportedNaqato'smaindeck awash on the starboard side. the list

1647 3 July 1335 1410-1430

364

PBM Charlie reported a fire on several ships, including Nevada (Reference 5, p . 6-8-91. Nevada was noted to be smoldering amidship (Reference 6, p. 1-I-A-10). USS Reclaimer (ARS-42) alongside Nevada fighting the fire (Reference 6, p. 7-IA-18). USS Preserver(ARS-8)putaboarding party on Nevada. Preserverreportedunderwaytofight fires on Nevada's portside. Fires extinguished. USS Clamp (ARS-33) reported a fire on Nevada's No. 4 turret. Clampmooredalongside,sentboarding team aboard. Fire party aboard. Clamp reported the fire on Nevada extlnguished and fire party returned to Clamp (Reference 6, p. 1-I-A-33). Boarding party returned from Nevada.

The captain with reboarding party A returned to ship to inspect damage. Member o € Bureau of Ordnance with inspection party of eight men came aboard.

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 USS Munsee (ATF-107) 28 August

Naqa t o

26 July 1715

1551UnderwayforKwajaleinwithtargetshlp USS Butte (APA-68) in tow. 30 August 1134 Anchored at Kwajalein. 31 August 0955-1030 Monitoring board came on board to check for radioactivity.

7 August 1400

2 September Departed for Pearl Harbor. 8 August

USS HUSTIN (DO-413) Crew Slze: 112 B l k l n lA t o l lA r r l v a l : By 1 June 1946 B l k l n Al t o l D l eparture: 28 August 1946 USS B o t t l n e a u (APA-235) Crew L o c a t l o n for Shot ABLE: Crew L o c a t l o nf o S r hot BAKER: B o t t l n e a u Shot ABLE L o c a t t o n : 2,147 y a r d s ( 1 . 9 6 km) ESE Shot BAKER L o c a t l o n : 1.280yards(1.2km) ENE Sunk 28 A p r l l 1 9 4 8n e a rK w a j a l e l n

USS Preserver (ARS-8) directed to proceed to target ship USS Fallon (APA-81). taking most direct route to Mustin. It was then t o proceed with great caution from the vicinity of target ships Mustin and USS Salt Lake City (CA-25) to Fallon. Entire crew transferred from Bottineau to USS Rockbridw (APA-228). IBT-4 reported Geiger readings: average topside 1.5 R/24 hours. maximum topside 4 R/24 hours; average below decks 0.2 R/Z4 hours, maximum below decks 0.35 R/24 hours.

9 August

0930-1050

Commanding officer and a selected group monitor of officers and men and a radsafe boarded Mustin for a quick inspect ion of the ship: inspection completed and party returned to Rockbrldqe.

Task U n i ta n dF u n c t l o n

The destroyer Mustin was a member of TU 1.2.3 (DestroyerUnit).DestroyerDivision 3. Mustin was a target vessel during CROSSROADS. Its crew was removed before both shots. Shot ABLE ( 1J u l y ,

12 August 0830-1700

Commanding officer with a selected group of men and a radiological monitor boarded Mustin to conduct salvage operations: all personnel returned to Rockbcidqe.

0900)

14 August 0800-1700

30 June 0924Commencedevacuatingship. 1100 Captainwithfinalevacuationgroupdeparted for Bottineau. Last-minute personnel remained aboard to start diesel generator.Entire ship's companywith exception of five men in the last-minute personnel group berthed aboard Bottlneau for ABLE.

15 August 0745-1600

1 July Entire ship evacuated.

2

July (AN-88) reportedaboard1003USSShakamaxon ing team aboard Mustin. i t had completed 1129 Shakamaxon reported Mustin. A ofre1615CommandingofficerwithTeam boarding party returned aboard with Geger counter. monitor. and selected ship's personnel. 1625 Team B returned aboard and commenced inspection of ship below decks. 1800TeamCreportedaboard.

3 July 1000TeamDreturnedaboard. 3-23 July Crew lived aboard ship. Shot BAKER ( 2 5J u l y ,

0835)

23 July 0820 Team C evacuated to Bottineau for BAKER.

17-19 August

Salvage operation group with radsafe monitor boarded Mustin and resumed salvage operation: all personnel returned to Rockbridqe. Average topside reading 0.25 R/24 hours. Salvage operation group with a radsafe monitor boarded Mustin and resumed salvage operations; all personnel returned to Rockbridqe. TransEerred 88 men to Rockwall.

28 August

1000 30 August

Mustin decommissioned.. Towed to Kwajalein. Anchored at Kwajaleln.

30 September Average topside reading 0.12 R/24 hours. NAGATO Crew S l z e1 :7 2 B t k t n lA t o l lA r r l v a l : 28 A p r i l 1946 Cr ew L o c a t l o nf o rS h o t ABLE: USS Rocklngham (APA-229) Crew L o c a t l o nf o S r hot BAKER: Rocklnqham Shot ABLE L o c a t l o n7: 8 2y a r d s ( 7 1 5 m e t e r s ) ESE NNE Shot BAKER L o c a t l o n7: 4 5y a r d s( 6 8 1m e t e r s ) Sunk 30 J u l y1 9 4 6 ,B l k l n L l agoon Task U n i ta n dF u n c t l o n

The captured Japanese battleship Naqato member was of TU 1.2.1 (Battleship and Cruiser Unit), Battleship Division 7. serving as a target vessel. Its CROSSROADS crew, composed of U.S. personnel. was transferred to Rockinqham before shot ABLE and did not return to live aboard.It participated in scientific experiments carrying ballcrusher gauges.

24 July 1013 Evacuation completed. except for four last-minute personnel. 1200ShipevacuatedforBAKER.

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 USS Munsee ( A T F - 1 0 7 )

USS Mugford (DD-389) 18 August Half of Muqford's crew transferred to remanned target ship USS Bladen (APA-63).

8-17 JulyEngagedinroutineactivities. 18 July USS Searaven 1005-1154 Ballasted target submarine (SS-196). 1145-1247BallastedtargetsubmarineUSSApOqon (28-308).

19 AugustTowingandanchorteamaboardfor45 minutes. Towed to Kwajalein.

21AugustAnchoredatKwajalein. 27 August Average topside Geiger reading hours.

Shot BAKER (25 July,0835)

0.18 R/24

28 August 1100 Muqford decommissioned. USS

24 July 1346

Underway from Bikini.

25 July 1420

Anchored in Rongelap Atoll.

30 July 1325

Underway from Rongelap to Bikini.

31 July 1113

Anchored east OE berth 168, Bikini.

HUNSEE (ATF-107)

Crew Slze: 63 Blklnl Atoll Arrlval: 25 June 1946 Blklnl Atoll Departure: 28 August 1946 Shot ABLE Locatlon: 130 nml (241 km) SE; en route from Blklnl to Kwajaleln Shot BAKER Locatlon: About 20 nml ( 3 7 km) E Decontamlnatlon Locatlon: San Franclsco Operatlonal Clearance: 18 November 1946 Flnal Clearance: Aprll 1947

1 August 2 August 0727

Task Unlt and Functlon 1 .8.1 (Repair and SerMunsee was a member of TU vice Unit). It served primarily as an ocean tug. Itmaintainedmaterialandrepairfacilities. towed vessels. and disposed of deck cargo amunition.

0754

Routineactivities.Notinvolvedwith target ships. Proceeded to wash down target ship Ralph Talbot (DD-390). Anchored.

3-4 August

Routine activities.

5 August

Radiological monitor aboard for unknown period oftime.

6-9 August

Routine activities.

Shot ABLE (1 July, 0900) 30 June 1612

10-12 August Maneuvered target ship various anchorages.

Underway from Bikini to Kwajalein.

WSS LST-125 to

1 July

1915Anchoredinanchorageberth84.Kwajalein. 1945Shiftedtoberth80.

13 August

Anchored with LST-125 moored alongside.

14 August

Maneuvered LST-125 to various anchorages.

3 July 1427UnderwayforBikini.

19 August 1416

4 July 1935HooredportsidetoUSSQuartz(IX-150). Bikini.

20 August 1239

6 July 0808-0839 0858-0959 1020-1100 1155-1248 1307-1346 1505-1522 2028

Retrievedammunitionfromtargetship YOG-83. Retrieved amunition from target ship E LST-52. @ Retrieved amunition from target ship LST-661. Retrieved ammunition from target ship LST-220. Retrieved ammunition from target ship 19 Army personnel to LST-545: took on assist in handlingamunition. Retrieved ammunition from target ship E H u q h e s (DD-410). Ammunition disposed of at sea. Anchored abreast of harbor entrance control vessel after dumping amunition.

7 July 0808-0943Stoodbytoassistinmooringtarget ships USS Pensacola (CA-24). USS Nevada (B3-36). and USS Salt Lake City (CA-25).

Went alongside target ship Prinz Euqen to prepare it for towing. Underway for Kwajalein with Prinz Euqen in tow.

22 August 1632

Arrived at Kwajalein and unhooked tow. En route to Bikini.

23 August 1149

Anchored in Bikini Atoll.

24 August 0805-1155 25 August 1032

Pumped target ship 85).

USS

Gasconade (APA-

Departed Bikini Atoll towing t arget ship USS Independence (CVL-22) to Kwajalein.

27 August 1403 1654

Arrived at Kwajalein. Underway to Bikini.

28 August 0942

Anchored in berth 227, Bikini.

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 USS Mount McKlnley ( A G C - 7 )

3-5JulyAnchored

USS Mugford (DD-389)

1432

in berth112.Bikini.

Shot BAKER (25 J u l y, 0835)

25 July 0518 0800 0835 0858 0925 1718

Underway for BAKER Day exercises. in area Steaming to maintain position Chevrolet. Bomb explodedbeneathtargetarrayin Bikini Lagoon. Received verbal orders to close to the east of Bikini Atoll. Began maneuvering to maintain position approximately 1 runi ( 2 km) west of Bikini Reef. Anchored in berth Peter, Bikini.

1515-1604

1615-1618 30 July 1059 1108

28 July 1722

Anchored in anchorage Able, Bikini 1409

30 July 0842

Anchored in berth 112, Bikini.

1459

10 August 1759

Underway for Pearl Harbor.

1514 1547

USS MUGFDRD ( 0 0 - 3 8 9 )

"

Crew S l z e1:2 6

1625

BlklnA l tolA l rrlval: By 1 June 1946 B l k l nAl t o lDl e p a r t u r e : 19 August 1946 Crew L o c a t l o nf o rS h o t ABLE: USS Bottlneau(APA-235) Crew L o c a t l o nf o S r hot BAKER: Bottlneau (2.5 km) E S E Shot ABLE Locatlon:2,690yards Shot BAKER L o c a t l o n : 2.595 y a r d s( 2 . 4 km) NE Sunk 22 March 1948 n e a rK w a j a l e l n

31 July 1316 1620-1634

Task U n l t a n dF u n c t i o n

The destroyer Huqford was a target vessel during CROSSROADS. Its crew was evacuated before each test.ItwasamemberofTU1.2.3(Destroyer Unit), Destroyer Division 3. Shot ABLE ( 1J u l y ,

0900)

30 June 0930 Teams C and D left the ship. 1150 Captain and Team A left ship.

2 July 1111

.

By 4 July the full crew had returned to Hugford.

x-

Current reported that i t had completed washingdownandinspectingHusford. IRT-1 reported 3 to6 R/24 hours topside. USSReclaimer(ARS-42)camealongside Huqford and placed monitors aboard (Reference 6, pp. 7-1-8-61 and 7-1-8-63). DSH and radsafe monitors completed inspecting Huqford above and below decks.

of Radioloaical conditions were such that Dortions crews could be put aboard for carrying out' DSM decontamination ptocedures for target vessels. Muqford had between 3 and 4 feet (0.9 and 1.2 meters) of water accumulatedintheenginebilges(Reference5.p. 6-D-46). Hugford received no damage from shot BAKER (Reference 2 ). 0800

0835)

24 July 0910 Team C left the ship. B left ship. 0945Team A left the ship. 1030 Captain and Team USS Current(ARS-22)reportedthat

Commandingofficerandboardingparty aboard and reported ship highly radioactive. Pumping operations conducted in the afternoon.

2-7 August

Boarded daily for decontamination. Twoto four-hour shifts used with total t i m e aboard about 9 hours per day.

8 August

Decontamination team aboard for 5 hours. Huqford crew transfecred to USS Rockwall (APA-230).

9 August

Decontamination team aboard for 4.5 hours.

13 August

Unidentified team of at least three men aboard.

15 August

Urinalysis made on all Huqford crew by USS Haven ("12) crew.

Crew aboardHuqford.

Shot BAKER ( 2 5J u l y ,

29 July 1307-1311

Current sent a boarding team aboard to remove instruments. Boarding team returned and USS Deliver (ARS-23) was directed to cover Muqford with foam. it had completed Current reported that washing down Huqford. Deliver reported that it had reached its radiological tolerance for one day. ford was90 percent covered with foam. USsClamp (ARS-33) reported that Huqford was covered with foam. Clamp reported operations complete (Reference 6, pp. 7-I-B-51. 7-I-B-52, and 7-1-8-54 through 7-I-B-56). IBT-10 reported short survey indicated4 to 14 R/24 hours topside.

1 August

USS Oneota (AN-85) reported that a boarding party was on board Huqford. 1132ReportedGeigersweetby USS Shakamaxon (AN-88) (Reference 6. pp. 7-I-A-27 through 7-FA-29). 1530 Captain and Teams A and B and last-minute security party returned to ship. 1533 Inspected ship.

5-23July

1907

Current was instructed to remove black boxes and other instruments that would be damaged by water and wash down Huqford with high-pressure hoses. Subsequently. the orders were changed to wash d m only. Current washed down Muqford. taking care not to hit the instruments. It was not to be boarded after the washing (Reference 6, pp. 7-I-B-42. 7-I-B-44. and 7-I8-45). Boarding team aboard.

its

boarding team was aboard Huqford.

36 1

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 USS

"

Moale (OD-693)

USS Mount M c K i n l e y ( A G C - 7 )

"

Task Unlt and Functlon The destroyer noale was a member of TG 1.7 (Surface Patrol). Destroyer Division 72. It measured radioactivity, took water samples outside the lagoon after each test. and conducted oceanographic surveys.

27 July 0543-0820 Conducted radiological and oceanographic investigation of oil slick. 1232-1458 Conducted radiological and oceanographic investigation of oil slick. 1712 Anchored in berth 369, Bikini Atoll.

Shot ABLE ( 1 July, 0900) 1 July 0558

0830 0950 1102 1216 1240-1248 1250-1255

1305 2140 2 July 1047 1428

28 July to conduct a radiological survey 1525 Underway of€ the western end of Bikini Atoll. Underway from berth 386. Bikini, to Orbit 2028Stoppingat 5 - m i (9-km)intervalsfor Point Sugar. oceanographic and radiological survey. Commenced circling Orbit Point Sugar. Remained outside of survey danger area 29 July 0001 Reported carrying out radiological paas prescribed. trol, taking sounding and water samples Entered the lagoon. Anchored off Eneu Island. off Bokdrolul and Oroken islands. Stopped Received contaminated water samples from every 5 mi (9 km) to take sounding and first drone boat. water samples. Received contaminated water samples from 330, Bikini Atoll. 1206 Anchored berth theseconddroneboat(totalsamples 30 July-2 August aboard, 16). Time elapsed from ABLE detAnchored in berth 189. onation until water samples were on board 6, p. was 3 hours, 55 minutes (Reference 7-I-A-38). 3-5 August Anchored in berth King. Underway from Bikini Atoll to Kwajalein. 5 August At Gea Island: YTB-537 came alongside for Underway. 0732 transfer of the water samples. 6-7 August Anchored in berth King. Returned to Bikini and moored to USS Chl_kaskia __ (AO-54) In berth 324, Bikini. 7 August 0755Underwaytoshiftberths. Underway to Pearl Harbor. 1505Anchoredinberth 305.

6 July 1320 1352

Moored at Pearl Harbor. Underway for San Francisco.

While in the Bikini area, M exercises.

11 July 1325

Moored at San Francisco.

10 August 1155UnderwayforPearlHarbor

15 July 0832

UnderwayfromSanFrancisco Harbor.

to

a participated In gunnery

USS MOUNT McKINLEY (AGC-7)

Pearl

Crew Slze: E24 I 8 July 0730 0958

Anchored at Pearl Harbor. Underway from Pearl Harbor to Kwajalein.

Shot BAKER (25 July, 0835) 24 Julv 0815 1130 1347 25 July 0546 0900 1902 26 July 1635 1715

1905

2 June 1946 Blklnl Atoll Departure: 10 August 1946 Shot ABLE Locatlon: 1 1 nml (20 k m ) ENE Shot BAKER Locatlon: 8.9 nml ( 1 6 . 5 km) ESE Decontamlnatlon Locatlon: San Dlego Operatlonal Clearance: 20 December 1946 FInal Clearance: 29 January 1947 B i k i n i Atoll Arrlval:

Anchored in berth10A, Kwajalein. Received aboard passenger observers and radiological oceanographic personnel. Underway from Kwajaleln to area Mack, Bikini Atoll.

Functlon MountMcKinley,anamphibiousforceflagship, served as the task force flagship. Several key groups were located aboard the flagship. including JTF 1. telecommunications. and the staff aerological unit,

Maneuvered in area Mack. Commenced upwind patrol for radiological survey. Anchored at Bikini Atoll.

Shot ABLE ( 1 July, 0900)

1 July 0511Underwayfor ABLE operations.proceeding to assigned station in area Chevrolet. t o keepinassignedstation 0800Maneuvered in area Chevrolet. 0901 Bomb detonated over the target ship array in Bikini Lagoon. 1540 Anchored in berth 191. Bikini Lagoon.

Underway for a radiological patrol outside the lagoon. Sighted oil slick. Hanuevered on various courses and speeds t o determine boundaries of oil slick and maximum radioactivity position. 2 July Completed taking water samples. 1010 Anchored in berth 112. Bikini.

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 USS Moale (DD-693)

USS Mayrant (DD-402)

28AugustMayrantdecommissioned:underwaytoKwajalein. 29 AugustArrived

8 August 0912-1505

1505

at Kwajalein.

9 August 1100

USS MENDER (ARSD-2)

10 August 0836-0910

Creu Slze: 49 Elktnl Atoll Arrlval: 9 July 1946 Etklnl Atoll Oeparture: 4 September 1946 Shot ABLE Locatlon: En route to Kwajaleln from Pearl Harbor k m ) SE Shot BAKER Locatlon: 12 nml (22 Oecontamlnatlon Locatlon: Los Angeles Operatlonal Clearance: 3 January 1947

0927-1428

1428

Shifted a submarine mooring buoy in vicinity of Ionchebi Island. Anchored in berth 30.

the

Anchored in berth 108A. Cleared a fouled anchor on target submarine USS Searaven (SS-196). Yorked alongside target submarine Parche(SS-384) torecoverthe stream anchor. Sustained damage from Parche as a result of the two vessels rolling togethec. Anchored in berth 108A.

Task Untt and Functlon

11-13 August Anchored in berth 108A.

Mender. a salvage lifting ship. was a member of TU 1.2.7 (Salvage Unit). Its functions irlcluded salvaging damaged target vessels after the tests, performing emergency repairs. and fighting fires. It also moved mooring buoys and laid submarine weights.

14 August 1420

Mender was put in 29.

floating drydock ARD-

Shot A B L E (1 July, 0900)

17 August 1546

En route to Kwajalein from Pearl Harborat the time of shot ABLE.

18-19 August Anchored in berth 30.

Out of floating drydockARD-29.

19-22 August Anchored in Bikini Lagoon. 9 July 0848

W r e d to USS Palmyra(ARS[T]-3) kini.

10-23 July Routine activities, Bikini

22 August 1602

at BI-

Atoll. 1830

Shot BAKER (25 July, 0835) 1840 24 July 1210 1259

Radsafe monitor reported aboard Mender for shot BAKER. Underway for area Mercury.

24 August 0755-0900 0901

25 July 1155 29 July 183 1 1912 30 July 0900-1220

1 August 1430-1710 1731

Anchored in assigned anchorage west of Eneu Island.

31 August 0800

and to

Swung the sternof target ship USS Hushes (DD-410) into Bikini Lagoon. Anchored northward of Eneu Island.

Stowed hose andpumps for sea aboard target ship USS Pensacola (CA-24). Anchored in berth 108A.

25-27 August The crew prepared LCHs. LCVPs. and four pontoon barges to come off Bikini beach.

Planted a mooring for a submarine in the vicinity of Ionchebi Island after shifting berths. Anchored in Bikini Lagoon. Aninspectionparty came aboard reportedonthedamagesustained Mender's hull during CROSSROADS.

Moored portside to target ship USS Fallon (APA-81) toput pumps and generators aboard. UnderwayfromFallon to anchorage in vicinity of Eneu Island. Anchored.

A beach party worked on target vessel LCT-1156[sic]broadsidetothebeach about 50 yards (46 meters) off. Divers hooked up air connections to blow the tanks forward. There wereexcessive holes in thecenter lineandthestarboard tanks forward. Anchored in Bikini Lagoon.

4 September 0628 Underway with YY (unnumbered) and target vesselLCT-1078 In tow for Kwajalein, thence to Pearl Harbor. USS MOALE (DO-693)

5-7 August

Anchored in BikiniLagoon in special anchorage 1,500 yards (1.4 km) south of anchorage 376.

7 August 0740-0846

Retrieved weights from target submarine Tuna (SS-203). Removed a radioactive1-1/2-inchwire rope. Anchored in berth 30. USS

1155 1606

Creu Slze: 247 Btklnl Atoll Arrlval: 5 June 1946 Blklnl Atoll Departure: 10 August 1946 (37 k m ) SE Shot ABLE Locatlon: 20 nml Shot BAKER Locatlon: 18 nml ( 3 3 km) SSE Oecontamlnatlon Locatlon: San Franclsco 1946 Operatlonal Clearance: 19 November Flnal Clearance: 1 1 December 1946 (Eremerton)

3 59

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