submersible vehicles

  1. Grey Havoc

    Nuclear Research Submarine (U.S. Department of the Interior, early 1970s)

    H/t moin1900:
  2. A

    Japanese Submersible Coastal Gun/Submarine

    I posted this over in Army Projects yesterday but got no response, and it may belong more properly over here. I was wondering if anybody has ever seen any pictures of drawings of the Japanese "Submersible Guns" developed by the 10th Military Experimental Station in Murotsu in 1945 for coastal...
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