1966-7 – DOWB Submersible – General Motors (American)
 DEEP OCEAN WORK BOAT (DOWB), a two man submersible built by General Motors in the United States by General Motors AC Electronics Division, was initially launched on October l2, 1967. Windowless, it has top and bottom "fish eye" lenses, plus television cameras, for full 360 degree vision. A TV viewing system is mounted on …
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