1.5 Friendly Forces 1.5.1 Same as in basic plan. 1.5.2 Experimental ships are TRANSIT ABLE AND BAKER. On TRAWSIT BAKER only, two steel plates, 2 in. and 4 in. thick, have been added to give additional shielding information for extrapolation to vessels having armored decks. 1.5.3 Continuous time histories of gemma radiation will be provided by Project 6.4f, which will develop, provide, and maintain the required instruments and recording equipment. 1.5.4 Surveys of the dose rates within compartments will be accomplished by Project 6.4d, which will provide and maintain manned radiac instruments. 1.5.5 Total integrated doses will be measured, using film badges 1.5.6 ifeasurements of the gamma radiation field from airborne and/or other dosimetric devices. activity, as afunction of time, and basic information regarding physical and chemical nature of the radioactive material will be supplied by Project 6.4a and by Program 2, Task Unit 15. 1.6 Assumptions and Limitations 1.6.1 Same asin basic plan. 1.6.2 A general requirement exists to evaluate the relative external gamma raciation hazard to personnel at principal operating stations in ships either equipped or not equipped with washdown systems. Measure- ments will be aimed at obtaining inform tion which cannot be obtained by tneoretical or computational methods or by controlled non-weapon test experiments. 1.5.3 Shielding data derived from this test can be used as check points for theoretical calculations and idealized non-weapon test experiments, providing a basis for predicting the shielding of various classes of naval vessels. 1.6.4 The shielding against airborne radioactivity can be separated from that against deposited radioactivity, so that the overall . reduction in hazard fromthese two sources can subsequently be evaluated for a variety of conditions provided the unshielded dose from these two sources is knorm. ST. LOVis Fire 1.6.5 A comparison of co.aputed values for idealized ships with monitor data from several Bikini target vessels indicates thattne shielding factor in locations below the weather deck can be adequately predicted, for the case of deposited contanination. However, the Bikini data are of [23