Figure No. Page No. 



19. U.S. Navy's Manned Undersea Vehicle Utilization 



in Fiscal Year 1975 19 



20. Shell Development Co.'s Design for an Unmanned 



Submersible Pipeline Repair System 20 



21. MARGENA.UT (formerly SUBMA.NAUT) , Owned and Operated 



by Margen Internacional, S.A 20 



22. Harbor Branch Foundation's SEA GUARDIAN SYSTEM 20 



23. PRV-2, Pierce Submersibles 22 



24. NEKTON BETA, General Oceanographies 22 



25. NEKTON GAMMA, General Oceanographies 23 



26. JOHNSON SEA LINK I, Harbor Branch Foundation 23 



27. GUPPY, Sun Shipbuilding and Drydock Company 24 



28. OPSUB , Ocean Systems 24 



29. MERMAID II, International Underwater Contractors 



Inc 25 



30. DIAPHUS , Texas A&M University 25 



31. PC-14C-2, U.S. Army Ballistic Missile Command 26 



32. BEAVER MARK IV, International Underwater Contractors 



Inc 26 



33. DEEPQUEST, Lockheed Corporation 27 



34. ALVIN, Woods Hole Oceanographic Institute 27 



35. DSRV-1, U.S. Navy 28 



36. SEA CLIFF and TURTLE, U.S. Navy 28 



37. TRIESTE II, U.S. Navy 29 



