Tang-class submarine
Class of ship
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The Tang-class submarines were the first submarines designed and built by the United States Navy after WWII. They incorporated the best features of the high-speed German Type XXI U-boat and the venerable U.S. Navy fleet submarine. Wikipedia
Speed: : 15.5 kn (28.7 km/h; 17.8 mph) surfaced; 18.3 kn (33.9 km/h; 21.1 mph) submerged;
Test depth: 700 ft (210 m)