The U-boat Net is one the most comprehensive military and history sites on the Net. Dealing with the U-boat War 1939-1945 through over 15, 000 pages and covering all German U-boats in the war and over 153 of the most decorated officers and personalities.

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Group Documentation of the Conctruction of a Submarine for a Physics Class at the University of Akron.

A one-person, dry, atmospheric-pressure pedal-power submarine.