‘ ee 9 aie ee iia -- ae | ie ia MEMORANDUM FOR RECORD (Cont'd) SUBJECT: Froteetion of Transient Shipping During Cperation CASTLE (5) Information from all the above scurces was channeled into the task force hesdquarters for eveluaticn and consideration at the Feather/Radsafe Command Briefings, 2. The results of the above efforts for ERAYO were as follows: 41) known transient shipping was diverted outside the hazardous fall-out area. The Petapsco (A0G-1) was sailed from Eniwetok to be out of the bazardous area by shot time. The Trust Territory ship W/V Roque wes cperating outside the designated sector (from Kwajalein to Utirik), arriving at Utirik on the morning of 2 March 1954 ard departing Tti- rik on 3 March 1954. The Roque was subsequently located and monitored at Majuro and founi to have insignificant levels of radiation. The Merapi was enroute from Eonolaln to Eniwetok but- well outside the designated sector area at ‘shot time, The Merapi was monitored upon arrival at Eniwetek and found not conteminated. be Based on the forecast significant cloud travel (forecest made on the night of B-3 days) the P2V sweep for B-2 days was directed along true tearing 300 degrees from ground sero. No ships ware sighted on this sweep. Based on the Be2 day shot tine farecest, the P2V sweep for Bel day was directed along true bearing 330 degrees to a distance of 375 nantical miles. The reduction in distance was based on forecast reduction in resultant wind speeds. This sweep contacted the USS General Patrick at 17-31, 162-C3E on course 266 degrees, speed 16 knots, at 1204M, 28 February 1954. ds she would clear the designated sector by shot time, ske was not diverted by the patrol aircraft. Based on a re-fcrecast (made on Bel day) of the significant cload ecvenmert for B day, it was decided to seerch in advance of the cloud along bearing 65 degrees true from ground sero out to 600 nautical miles. Two P2V's were used. The first of these became contaminated early in its mission and was forced to return to bese. The second was directed to pick up the searck in the approximate location of the previous abert ani carry it out to the 600 miles. The only contact reported by these air- ‘eraft was the Patapsco (40G-1) sighted at 12-21N, 170-228, at 1935M, 1 Karch 1954, course 30 decrees, speed 1C krote. The Patapsco wes turned to an easterly heading at 2030K, 1 March 1954. The-Commender in Chief, Pacific Fleet was advised later to have the Patapseo monitored upon arrival at Eonolnlu in the event a check exroute could not be eccorplisbed.