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USS Requin
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4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines driving electrical generators[2][3] 2 × 126-cell Sargo batteries[4] 2 × low-speed direct-drive Elliott electric motors [2] two propellers [2] 5,400 shp (4.0 MW) surfaced[2]