![]() ![]() Forward the Narwhal resembled the Sturgeon-class submarines, but with a relocated diesel generator and slightly greater beam. The Narwhal ( SCB 245) and the Sturgeon class ( SCB 188A) were developed simultaneously. Narwhal, the quietest submarine of her era, had a similar but distinct design to the Sturgeon-class submarines.The Lipscomb's trial of turbo-electric propulsion was not considered successful due to lower speed - top speed was 23 knots (43 km/h), 5 knots slower than the Thresher/Permits - and a lack of reliability, and she was decommissioned in 1989. The massive motor and associated generators required her to be lengthened to 365 ft 0 in (111.25 m). ![]() Lipscomb, a one-ship class, was completed using a turbo-electric system for main propulsion rather than a reduction gear drive from the steam turbines.
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