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.
- David Bushnell's Turtle SubmarineDavid Bushnell's Turtle Submarine
- Robert Fulton's SubmarineRobert Fulton's Submarine
- Horace Lawson Hunley & SubmarineInventor Horace Lawson Hunley & Submarine
- The Confederate Submarine H.L. Hunley The Confederate Submarine H.L. Hunley
- The Alligator SubmarineThe Alligator was the first submarine purchased by the US Navy.
- Intelligent Whale SubmarineIntelligent Whale Submarine
- USS Holland (SS-1)USS Holland (SS-1)
- Submarine built by Simon Lake
- The First U.S. Navy SubmarinersThe First U.S. Navy Submariners
- US Submarines AL9, AL11Pictures of US Submarines AL9, AL11, in dock
- US Submarine L1 US Submarine L1
- Typical WW II Submarine LayoutTypical WW II Submarine layout
- Graphic Index
- Text Index
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