Propulsion: 2 × New London Ship and Engine Company (NELSECO) diesels, 600 hp (448 kW) each; 2 × Electro-Dynamic (S-1, S-30-S-35), Ridgway (S-18, S-20 through S-29), or General Electric (S-36 through S-41) electric motors, 750 horsepower each; 120 cell Exide battery; two shafts.