Around 2400 hours, the SIOUX began encountering fallout of increasing intensity in the area 39-40 miles northeast of Bikini. The ship proceeded slowly northwestward until approximately 1200 hours on 28 March, then southeastward during the afternoon, receiving fallout throughout the day. The SIOUX also received fallout during the morning of 29 March while enroute to Enewetak from Bikini. The PHILIP briefly entered the lagoon between 1300-1415 hours on 28 March, then resumed its patrol to the south of Eneman Island. The EPPERSON entered the lagoon about 2000 hours ahd remained there overnight. The RENSHAW was relieved by PHILIP at 1415 nours and proceeded to the anchorage area for the night. During the night of 28-29 March, fallout was recorded on all ships in Bikini Lagoon between approximately 2200-0830 hours. The BELLE GROVE, moored to buoy "Y", set condition ABLE at 2200 hours. The BAIROKO, in berth "Z", turned on its washdown system twice--at 0130 and 0320 hours. The LST-551, beached on Eneman Island, set condition ABLE and took rad-safe measures at 0315 hours. The EPPERSON put to sea between 0630-0900 hours to wash down the ship (washdown was completed about 0735 hours). About 1500 hours the LST-551 got underway for Enewetak and the BELLE GROVE followed approximately three hours later. Thus, on the night of 29-30 March, the ships in the Bikini area were the AINSWORTH, BAIROKO, CURTISS, EPPERSON, ESTES, PHILIP, and RENSHAW. Those in the Enewetak area were the APACHE, LST- 551, LST-762, NICHOLAS, and SIOUX, with the BELLE GROVE enroute. The GYPSY departed Kwajalein at 1922 hours on 29 March enroute to Ajilinglapalap Atoll to perform salvage operations; it was not affected by the fallout on Kwajalein during 30-31 March. 2.1.3 Shot KOON Shot KOON was detonated at Bikini Atoll at 0620 hours, 7 April 1954. Eight of the ships of interest were operating in the Bikini area. They were: 22 ee