Page:Operation Crossroads 1946.pdf/390

 PGM-31

PGM-29

5 August 1350

4 July 0925-1505

Oceanographic party boarded and removed all oceanographic equipment.

1505 6 August 0850 0855 1040 1130 1142

5 July Oceanography party boarded. 1103-1745 Steaming in Bikini Lagoon taking samples of water. Water-sampling devlces lost. Oceanography party departed for USS Bowditch (AGS-4). Anchored In berth 365, Bikini. 1750

Underway taking water samples for oceanographic survey. Anchored in berth 42. Underway with radiological survey party for various islands around Bikini Atoll. Radiological survey party used a wherry visit Aerokoj, Aero[a small boat] to kojlol. and Enidrik islands and recuiqed to ship. Anchored in berth 344.

E August

0845-0920 10

August 1815

6 July 0830-1600

Scientific party on board to make a radiological survey of the m-29. Underway en route to Guam via Kwajalein.

1 1 August

Arrived at Kwajalein.

12 August

Underway forGuam.

17 August

Arrived at Guam.

1650 9 July 0905 1035 1050

1525 1750

Underway to islands at western end of lagoon to conduct radiological survey. Anchored in berth42. Underwaywithseismologistsaboardto clear target array area. Anchored off Bokonejien Island. Seismologists went ashore in rubber boat. Seismologists returned aboard. Anchored in berth 175, Bikini.

PGM-31

Crew Slze: 55 Blkinl Atoll Arrlval: 29 Ray 1946 Btklnl Atoll Departure: 10 August 1946 Shot ABLE Locatlon: 20 nml (37 km) E N E Shot BAKER Locatlon: 8 nml (15 km) SE Decontamlnatlon Locatlon: 'Pearl Harbor Operatlonal Clearance: 17 January 1947 F l n a l Clearance: 25 January 1947

Task Unlt a n d Functlon m - 3 1. a patrol motor gunboat. was a member of TU 1.8.3 (Dispatch Boat and Boat Pool). 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 duties. Shot A B L E ( 1 J u l y, 30 June 1240 1 July 0905

1105 1130

1955 2 July 0600-1350 1350 1603 1910 3 July 0851 0903-1239 1430

11 July 0830 0955-1325 1420-1600 1830 13 July 1708 1845

Seismologists came aboard. proceeded to Nam Island. Seismologists onNam Island Seismologists on Iroij Island. Anchored in berth 44. Underwaythroughtargetandanchorage areas. Anchored in berth 44.

Shot B A K E R (25 J u l y, 0835) 24 July 1415

Underway to rendezvous with TG 1.8.3 in area Franklin. outside Bikini Lagoon.

0900)

Underway to area Franklin to await ABLE day. UnderwayforassignedareaoffEneu Island. Laying to inslde lagoon entrance awaiting LCPL-B-15. B-16. and 8-17, AssembledpatrolwithLCPLsandstood into target array. sector France (south to southeast of surface zero). surveying radioactivity of the target ships. Anchored in berth115, Bikini.

25 July 0910 1030

1337 1545 1600 1845

Conducted radiological survey in accordance with orders of Radsafe Director. Anchored in berth42. Bikini. Underway. Anchored in berth 227. Oceanographic party reported aboard. Proceeded to different parts of Bikini Lagoon to take water samples for oceanographic survey. Anchored in berth 370.

26 July 0608 0830-1645 1720

Laying to at lagoon entrance. Enteredthelagoonandproceededcautiously into target array. sector England (southtosoutheastofsurfacezero), taking water samples and radioactivity readings in company withKPL-B-15. B-16. and B-17. Stood out of Bikini Lagoon to flush decks with clear water due to high radioactive contamination. Reentered Bikini Lagoon. Anchored at Bikini. All officers and men evacuated to vSs H a v e n (AH-12) in accordance with verbal orders from radsafe due to induced radioactivity in the hull and piping. vhich occurred vhen "31 attempted to find a routetothesinkingtargetship @ Saratoqa ( ( 3 - 3 ) . Oneofficerandfive men came aboard fromHaven as a security watch. Captain and personnel returned to "31 and made preparations to get underway: security watch returned to Haven. Underway to take water samples In lagoon. Anchored.