Designs for underwater boats or submarines date back to the 1500s and ideas for underwater travel date back even further. However it was not until the 19th century that the first useful submarines began to appear.
- USS Flasher SS 249 High scoring Submarine for WW IIUSS Flasher SS 249 High scoring Sub for WW II
- USS Tusk SS 426 Guppy Type Submarine USS Tusk SS 426 Guppy type submarine
- Forward Torpedo RoomForward Torpedo Room
- Loading TorpedosLoading Torpedos
- Nuclear-Powered SubmarineUSS Nautilus
- Royal Navy SubmarineRoyal Navy Newest Submarine
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