DEVELOPMENTS IN TECHNOLOGY FOR 



UNDERSEA MISSIONS 36 



Structures for Deep Submersibles 36 



High-Strength Steels, Titanium, and Alumina 37 



Glass and Reinforced Plastics 42 



Buoyancy Material 44 



Material Properties for Deep-Submergence Pressure Hulls .... 46 



Structures and Materials for Undersea Installations 47 



Energy Conversion 53 



Machinery for Ocean Engineering 55 



Undersea Manipulators 57 



Atmosphere Control 58 



Sensors, Navigation, Controls, and Communications 60 



Saturated Diving and Sealab 67 



Deep Submergence Biomedical Development 75 



Sea Floor Engineering 76 



Acoustical Oceanography 80 



DEVELOPMENTS IN ENVIRONMENTAL PREDICTION 



AND OCEANOGRAPHIC SURVEY 84 



Prediction of the Marine Environment (ASWEPS) 84 



Shipboard Survey System 89 



Air-Sea Interface 90 



Magnetics and Gravity 91 



Radiological Surveys 92 



Coastal Engineering 92 



Hydrographic Surveying and Charting (HYSURCH) 93 



Aerial Survey Techniques 94 



Automation of Chart Production 94 



OCEAN ENGINEERING AND TEST FACILITIES 97 



Oceanographic Instrumentation Center 97 



Ocean Pressure Laboratory 100 



Ocean Engineering Test Facility 102 



Deep Ocean Simulation Laboratory 104 



Experimental Diving Unit 106 



Atlantic Undersea Test and Evaluation Center 108 



IV 



