2.2.10 USS GYPSY (ARSD-1) At the time of Shot BRAVO, the GYPSY was in its assigned area east-southeast of Bikini (see Figure 2-1). Being much farther south than the BAIROKO, PHILIP, and ESTES, the GYPSY did not receive the early fallout that these ships did. Intensities began to rise on the deck of the GYPSY at approximately 1400 hours and peaked at 1800 hours when a shipboard survey indicated average intensities of 250 mR/hr (Reference 10). being turned on; The GYPSY's deck log makes no mention of the washdown system however, a rapid decrease in average topside intensities to 150 mR/hr by 2000 hours (Figure 2-21) suggests some efforts were made to decontaminate the ship, probably with fire hoses. Figure 2-21] also indicates that further efforts to decontaminate the ship were made between 0800-1200 hours on 2 March (H+25 to H+29) when average intensities were reduced to 45 mR/hr. The GYPSY reentered Bikini Lagoon at approximately 1300 hours on 2 March, and the following day the créw began to wash down (decontaminate) the LCUs and other small craft that had beenleft in the lagoon for Shot BRAVO. Topside intensities did not decay as rapidly on the GYPSY as on the other ships in the lagoon. It was surmised at the time (Reference 10) that the reason for this was that the ship's weather decks were quite custy, which appeared to hold the radioactive particles. Also, the ship was used extensively to recover contaminated chains and mooring gear from the bottom of the lagoon. Except for two brief periods out of the lagoon on 12 and 19 March, the GYPSY remained in the lagoon conducting salvage operations until it got underway for Kwajalein on 26 March. The GYPSY arrived at Kwajalein on 27 March, but on 30-31 March when that atoll received fallout from Shot ROMEO(see Section 2.2.2), the ship was conducting aircraft recovery operations at Ailinglapalap Atoll. April and on 9 April it departed for Pear! Harbor. It returned to Kwajalein on 2 The GYPSY did not return to the PPG during Operation CASTLE; hence, Shot BRAVO was the only detonation that resulted in fallout on this ship. The GYPSY remained in Bikini Lagoon almost continuously from 2-26 March, departing only twice for brief periods. 81 The ship contamination model described