United States Porpoise class submarine
- United States Porpoise class submarine
The "Porpoise"-class were submarines built for the United States Navy in the late 1930s, and incorporated a number of modern features that would make them the basis for subsequent classes such as the "Salmon", "Tambor", "Gato", "Balao", and "Tench" classes. Based on the "Cachalot"s, enlarged to incorporate additional main diesels and generators, [Alden, John D., Commander, USN (retired). "The Fleet Submarine in the U.S. Navy" (Annapolis, MD: Naval Institute Press, 1979), p.210.] the Portsmouth boats were all riveted. [Alden, p.210.]
In general, they were around convert|300|ft long and diesel-electric powered. Displacement was 1,934 tons submerged for the first four boats, 1,998 tons for the later ones.
The all-electric drive was troublesome, suffering frequent flashovers. [Alden, p.58.] Their Winton Model 16-201A 16-cylinder diesels also proved problematic, and were eventually replaced with 12-278As. [Alden, p.58.]
The "Porpoise" class was made up of the following subclasses:
P-1 Type
* (SS-172) USS|Porpoise|SS-172|6
* (SS-173) USS|Pike|SS-173|6
P-3 Type
* (SS-174) USS|Shark|SS-174|6
* (SS-175) USS|Tarpon|SS-175|6
P-5 Type
* (SS-176) USS|Perch|SS-176|6
* (SS-177) USS|Pickerel|SS-177|6
* (SS-178) USS|Permit|SS-178|6
* (SS-179) USS|Plunger|SS-179|6
* (SS-180) USS|Pollack|SS-180|6
* (SS-181) USS|Pompano|SS-181|6
References
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2010.
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