were quartered aboard the CURTISS where shop space was available, The remainder of the scientific personnel were quartered aboard the AINSWORTH whick also served as a main Task Group 7.5 base. Per= somnel not accustomed to living aboard ship found long tours afloat unpleasant and thus morale was adversely affected, Through rotation of personnel, however, the situation never grew to be serious. Another result of the large yield and wmusual aftereffects of SHOTf\was the enlargement of the danger zone surrounding the PPG, The old danger area was bounded by meridians 160° 35! and 166° 16! east longitude and the parallels 10° 15! and 12° 45! north latitude, The new zone provided an additional sector centered on a point 12° north and 164° east extending clockwise from 240° true to 095° true out to a distance of 450 nautical miles, The necessity for creating a larger danger zone after|SH/0r / arose from an incident which had international repercussions, Al- though careful, pre-shct searches were conducted with negative results, a Japanese fishing vessel, the Fukuryu Maru (or Lucky Dragon) was later discovered to have been within an estimated eightymile range of the center of the [star7, blast. As information be- came available, it was determined that the vessel had been just beyond the outer limits of the danger area as it existed at that time, The vessel with its crew was showered with radioactive fall- out which contaminated the ship, the crew, and their catch, It was reported by the Japanese that when the Fukuryu Maru arrived in Ja- t-! pan on 14 March all twenty-three crew members, two of whom were