The "Submarine Of California" (SS-108) was never built. The "Submarine of California" was so named because the patent holder intended to build the submarine in California.
Construction of this submarine was to have incorporated the "Neff" propulsion system. This system was designed to eliminate the motors and storage batteries normally used in subsurface propulsion, using in their place the diesel engines used for surface propulsion. Compressed air, stored on board, was to have supported the combustion cycle of the diesel engines, while a collector device was to dispose of the diesel engine exhaust gases. Proponents of this system sought to increase the submarine's submerged range and speed.
However, design limitations, such as weight and space requirements for the compressed air handling equipment, dangers in handling the toxic exhaust gases of the diesel engines, and excessive noise that would have been generated by these novel equipments, caused plans for SS-108 to be cancelled.
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