Page 



grounding 694 



launch/ retrieval 692 



loss of electrical power 689 



loss of routine ballasting 686 



operating in Naval exercise areas 692 



overpowering water currents 692 



sea state 694 



sea water density changes 691 



separation from support craft 690 



underwater collision 686 



surface devices and procedures 670 



anchors 672 



breathing gas expired 672 



flashing light 671 



inflatable hatch trunk 673 



inflatable modules 673 



life rafts 672 



radio signals 671 



radio transceivers 670 



rockets and flares 671 



snorkel 675 



underwater telephone 671 



Environmental factoids influencing vehicle design: 14 



acoustics 15 



ambient light 14 



bottom conditions 16 



conductivity 14 



currents 15 



density 15 



pressure 14 



sea state 15 



temperature 14 



Equilibrium, states of 16 



Exostructure, defined 263 



Experimental Diving Unit 36 



External attachments, design considerations 18 



External structures 263 



exostructures 263 



design considerations 264 



joining to pressure hull 264 



fairings 265 



advantages vs. disadvantages 265 



purpose 265 



Fail-safe deballasting 36 



FAMOUS Program 212 



Farrow, Doug 11 



FI\RS 35 



FNRS-2 35 



described 127 



FNRS-3 38 



described 129 



Fofonoff, N.P. 483 



Fonds National de la Recherche Scientifique 35 



748 



