Star III, a research submersible
Two DRVs- Deep Research Vehicles (manned submersibles) were built by the Electric Boat Corporation at their Groton, CT shipyard, Star II-delivered June 30, 1966 and Star III-delivered 15 days earlier.
Now days the Star III can be seen on display in front of Scripps Institution of Oceanography in San Diego, California.
Technical specifications, Star II:
Pressure hull: a 5 ft diameter sphere 5/8 inch thick HY-80 steel.
Length: 17.7 ft.
Payload:150kg. of scientific equipment
Battery: Lead-acid storage of 8 hr, life support capability is 48 hr.
Propulsion: 2*2hp vertically mounted hovering variable electric motors, 2*2hp horizontally mounted variable speed stern thrusters.
Speed: 3 knots max.
Operation depth: 1,200 ft.
Complement: a two man submersible vehicle
||Star III (Research vehivle- DRV) and scuba divers (DSV Triest in margine)
||Dolphin and submersible Star III