2.2.17 USS RENSHAW (DDE-499) On 1 March, when Shot BRAVO was detonated, the RENSHAW was on patrol approximately midway between Enewetak and Bikini Atolls. At about 2100 hours, the ship steamed toward Enewetak descending (See Section 2.2.1). where fallout from Shot BRAVO was already Although not documented, it is probable that the portion of the cloud responsible for the Enewetak fallout passed over the RENSHAW sometime during the evening of | March, exposing the crew to levels of radioactive fallout comparable to those documented on Enewetak. Since shipboard intensity levels are not documented, it is assumed the RENSHAW received the same fallout as Enewetak following Shot BRAVO. (See Figure 2-3). On 27 March, the RENSHAW was on patrol when Shot ROMEO was detonated and it did not return to Bikini until approximately 1500 hours, 28 March. anchored in the lagoon until 31 March when it resumed patro! duties. It remained At 2000 hours, 28 March, the ship began receiving secondary fallout from Shot ROMEOand by 2400 hours, average topside intensities were 20 mR/hr (Reference 10). The deck log for 2829 March does not specify if decontamination of the ship was undertaken, but at 0800 | hours on 29 March when the crew was mustered, average intensities were less than 10 mR/hr. Figure 2-29 depicts the average topside intensity onboard the RENSHAW resulting from the Shot ROMEO fallout. Following Shot NECTAR on 14 May, the RENSHAW briefly returned to Enewetak Lagoon at approximately 0800 hours and again at approximately 1730 hours. hours, it departed Enewetak enroute to Pearl Harbor. At 2200 While in the lagoon between 1730 and 2200 hours, the ship probably received the same fallout as the residence islands of Enewetak during this same period (See Section 2.2.1 and Figure 2-5). The three other shots in the CASTLE series did not result in fallout on the RENSHAW. The RENSHAW entered Bikini Lagoon eighteen times between 8 March and the end of May. Specific periods of time in and out of the lagoon, as well as the corresponding integrated intensities determined from the ship contamination model, are given below. 106