The submarine Porpoise (SS-172) of the US Navy.
Technical information
| Type | Submarine |
| Displacement | 1310/1934 BRT |
| Length | 301 feet |
| Complement | 5 + 45 men |
| Armament | Armament six 21" torpedo tubes, four forward, two aft, 18 torpedoes. one 3"/50 deck gun. two .50 cal. machine guns. two .30 cal. machine guns. |
| Max speed | 19/8 kts knots (surfaced/submerged) |
| Engines | Diesels/Electric 2 shafts |
| Power | 4300 / 2085 hp. (surfaced/submerged) |
| Notes on class | These boats were the first all-welded submarines in the US Navy. Their speed was reported to exceed 20 knots. |
All ships of the Porpoise class
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 | Pike (SS-173) | |
| | Porpoise (SS-172) | |
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US Navy (more on See all Submarine classes.
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