Deep Submersible Vehicles in Service or Available Worldwide
| Country | Submersible | Operator | Depth | Date Built or Modified |
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| USA | Alvin | Woods Hole Oceanographic Institution | 4,500 m | 1964/mod 1973 |
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| | Clelia | Harbor Branch Institution of Oceanography | 350 m | 1974 |
| | Sea-Link 1 | Harbor Branch | 800 m | 1971 |
| | Sea-Link 2 | Harbor Branch | 800 m | 1975 |
| | Diving Saucer | Jacques Cousteau Society | 350 m | 1959 |
| | Nekton Gamma | Caribbean Research Lab | 300 m | 1970 |
| | NR-1 | U.S. Navy | 700 m | 1969 |
| | Pisces V | University of Hawaii | 1,500 m | 1973 |
| | Snooper | Undersea Graphics | 300 m | 1969 |
| | Delta | Delta Oceanographics, Inc. | 300 m | 1982 |
| Russia | Argos | P.P. Shirshov Institute | 600 m | 1975 |
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| | MIR I | P.P. Shirshov Institute | 6,000 m | 1987 |
| | MIR II | P.P. Shirshov Institute | 6,000 m | 1987 |
| | Osmotr | P.P. Shirshov Institute | 300 m | 1985 |
| | Pisces XI | P.P. Shirshov Institute | 2,000 m | 1975 |
| | Pisces XII | P.P. Shirshov Institute | 2,000 m | 1975 |
| Ukraine | Sever 2 | Academy of Science | 2,000 m | 1969 |
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| | Sever 2 Bis | Academy of Science | 2,000 m | 1970 |
| | Benthos I | Academy of Science | 300 m | 1969 |
| | Benthos II | Academy of Science | 300 m | 1972 |
| | Tinro-2 | Academy of Science | 400 m | 1973 |
| | Tinro-2 Bis | Academy of Science | 400 m | 1974 |
| France | Cyana | IFREMER | 3,000 m | 1970 |
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| | Deep Rover 2 | Ellipse Program | 1,000 m | 1994 |
| | Nautile | IFREMER | 6,000 m | 1985 |
| | Saga | IFREMER | 600 m | 1987 |
| | 450-Vaimana | Papete, Tahiti Industrie et Tourisme Sous-Marin | 450 m | 1982 |
| Japan | Shinkai 2000 | JAMSTEC | 2,000 m | 1981 |
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| | Shinkai 6500 | JAMSTEC | 6,500 m | 1987 |
| Canada | Deep Rover | Can Dive | 1,000 m | 1984 |
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| Romania | SC-200 | Institute of Oceanology | 200 m | 1979 |
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| | SM-358 | | 300 m | 1979 |
| Switzerland | A.F. Forel | Piccard | 500 m | 1979 |
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| Germany | JAGO | Max Planck Institute | 500 m | 1990 |
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| South Korea | Hae yang 250 | Korea Ocean Research and Development Institute | 100 m | 1988 |
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| Bulgaria | PC-8 | Institute of Oceanology | 200 m | 1981 |
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| Finland | SM 80/2 | Finnish National Board of Waters and Environment | 500 m | 1990 |
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