WW2 submarine stopwatch.
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Previously:
1964 passenger submarine - photo
Closing the hull of a new Spanish submarine - photo
Decommissioning a submarine nuclear reactor - photo
Iranian midget submarines - photos
Narco-submarine captured by U.S. Coast Guard - video and infographic
Navy SEAL SDV mini submarine - photo and video
Raising WWII German submarine U534 - videos
The H.L. Hunley, the first submarine to sink a warship
USS Plunger submarine - photos
WW2 Japanese midget submarine - photo
WWII Japanese submarine yard before and after bombing - photo
