subjected to oxténeive radioactivefantout, three of thea,_BAIROKO, ESTES and Pan, «on arelatively heavy scale,5 Prior to‘the detonation 4 Tt the ‘ships hadbeen deployed at sea generally in the“southeast quadrant ” to 40 niles. This - . . fron ground, Zero,‘ab, distances ranging from 30 dispoaition an its location were based on four principal factors: r the latest om SEVEN radexs the ‘requtremnts of cTG 7 and cra ch, that ESTES and’‘omtass be positioned, about 12 niles ‘from Baya Island Te I, for reliable, uF communications, and Radiot and aircraft’ control , a. 7 purposes; thenecessity that ships be at safe distances fron the chot ‘site;‘and the‘requirenent of’ reasonable concentration tor‘command. ‘cations ani‘ship control purposes." Hihen wind data beganto‘indicate,: * wut an ‘sasterly,“component jistbefore the shot, ‘some of the analler, sloner ~ seeee units were moved‘to‘the muth. ‘The ‘larger ships were. ‘nob moved ben ¢ ° “cause of ‘their‘positioning requirenante. rc wet ane » ee = Se - eae Be a a : : - : ~ Nino Fe ge ene Lee we we: aoe ' tet a he.| About“0800, just’ asBA.ROED was Launching helicopterstto“oe . begin the initial reentry schedule, sudden and rapidly inereasing. : radioactive fallout was ‘detected on several ships.m2 ships steaned e south at their Best speeds, cleared personnel from their weather: oe. decks, closed porte and hatches, secured. unnecessary ventilation andwe * turned on mashdown systems, 5e | Highly radioactive, visible white particles, about the size of pinheads, fell on the ships. In spite of the continuous use of “Fr Ere 7.3 ltr ser 00666 af 22March 195) 6. Encl (5) to CTG 7.3 ltr ser 00419 of 26 Feb 1954