Tambor-class submarine
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The Tambor-class submarine was a United States Navy submarine design, used primarily during World War II. They were the USN's first fully successful fleet submarine, and began the war close to the fig
USS Tambor (SS-198)
Periscope photo of a Japanese merchant ship sinking.
Sargo-class submarine
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The Sargo-class submarines were among the first United States submarines to be sent into action after the Japanese attack on Pearl Harbor, starting war patrols the day after the attack, having been de
Tambor-class submarine
…attained the top speed of 21 knots (39 km/h) and range of 11,000 nautical miles (20,000 km) (allowing patrols in Japanese home waters) of the preceding Sargo class, and improvements included six bow torpedo tubes, a more reliable full diesel-electric propulsion plant, and improved combat efficiency with key personnel…
USS Searaven during her sea trials on 13 May 1940
Periscope photo of a Japanese merchant ship sinking after being torpedoed by Seawolf.