TABLE OF CONTENTS Page Section Vv LIST OF TABLES1.0.0.0... cece eee ce cece ee teen t ee eta ee te eee eneeeeeeneenenreeen es vil BACKGROUND1... oo. cece cere cece ence ete eee e eens nent eens eneneeea 1.2 NAVAL PARTICIPATION...........ccecceseecceseseeeesceueeseeeeeaeetes 1.3 METHODOLOGY... cece cee cecene eee cec tenes eee eeese een ce eeneneen ees RADIATION ENVIRONMENTS..........ec cece eee se eet ee ences eee ne eee ensenenaeees 9 2.1 RADIOACTIVE FALLOUT. 2.0.0... c cece ce ccne eee eee eteeeee ee eenenenes 9 2.2 SHIP CONTAMINATION MODEL ....... 0... eee e eee ee ee eee eee e ees 1k 2.3 WATER INTENSITY MODEL..... 0... cece cece seen tenet eee nena anes 14 2.4 BIKINI LAGOON WATERINTENSITIES......... 0... seeseeeeeeeeeee 15 SHIP OPERATIONS.....0.. cece cee cec ee ec eee ne reece ee ee ee eee et en eneeeeeeeeasneenns 19 3.1 19 PROJECT SUPPORT..... 0... ccecc cece ence eens eee eeeeneene eee eaneueeee Oe 1.1 tn INTRODUCTION. ..... 0. cccccec cece ne cee ec ec ec eeee nee eneaeneaeeeneeeeeeeeneneesees ened et LIST OF ILLUSTRATIONS....... 0... .ccccccc eee ece tence tee ee eee ne sees eee ence eens 3.1.1. Project 3.4 - Sea Minefield Neutralization by Means of a Surface Detonated Nuclear Explosion ...............2..eceeee eee 19 3.1.2 Project 1.4 - Underwater Pressure Measurements............. 20 3.1.3. Project 6.4 - Proof Testing of Atomic WeaponsShip Countermeasure.........6.. cece cece ee eeneceeenceeseeeneeeneeeenens 21 3.1.4 Miscellaneous Support Activities 2.0.0.0... cccceceseee eee eee ees ~ 21 3.2 USS RECLAIMER (ARS-42)... 0. cece ccc ce cee ecececee ea eeeneneeseeeees 22 3.3 USS SHEA (DM-30) 200... e cece ee cece ence ee en teen eneneneteeeene eens 26 3.4 USS COCOPA (ATF-101) oo... cc ces ccc ence nsec ee enenenaeenseneneeees 28 3.5 USS MENDER(ARSD-2) ooo. cece cece ec cece een eneneeeeeseeennenes 37 3.6 USS MOLALA (ATF-106) 000... c cece cece ee eset eneee ea eee ee ee ene eeea 45 3.7 USS TAWAKONI (ATF-114) 0c cece cc ccncne eens cent eeeeseeeeeenenes 56 3.8 USS PC-1546 occ cece cece e eee detente nee ee eee ea ene eeeea 62 3.9 USS LST-1146 000 cence erence ree ee ee ete ee ee seen eben ana eees 64