| Navy | The US Navy |
| Type | Submarine |
| Class | Gato |
| Pennant | 260 |
| Built by | Electric Boat Co. (Groton, Connecticut, U.S.A.) |
| Ordered | |
| Laid down | 21 Feb 1942 |
| Launched | 27 Oct 1942 |
| Commissioned | 23 Jan 1943 |
| End service | 10 Aug 1957 |
| Loss position | |
| History | Decommissioned, 25 July 1946. |
Commands listed for USS Lapon (260)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Cdr. Oliver Grafton Kirk, USN | 23 Jan 1943 | Aug 1943 |
| 2 | Cdr. Lowell Thornton Stone, USN | Sep 1943 | Aug 1944 |
| 3 | Cdr. Donald George Baer, USN | Sep 1944 | Jul 45 ? |
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Noteable events involving Lapon include:
4 May 1943
With her trials and initial training completed USS Lapon (Cdr. O.G. Kirk) departs New London for Pearl Harbour.
1 Jun 1943
USS Lapon (Cdr. O.G. Kirk) arrives at Pearl Harbour.
24 Jun 1943
USS Lapon (Cdr. O.G. Kirk) departs Pearl Harbour for her 1st war patrol. She is ordered to patrol in the Sea of Okhotsk and in the Sea of Japan off the east coast of Hokkaido and Honshu.
3 Aug 1943
USS Lapon (Cdr. O.G. Kirk) ends her 1st war patrol at Pearl Harbour.
26 Sep 1943
USS Lapon (Cdr. L.T. Stone) departs Pearl Harbour for her 2nd war patrol. She is ordered to patrol off the south coast of Honshu, Japan.
18 Oct 1943
USS Lapon (Cdr. L.T. Stone) torpedoes and sinks the Japanese merchant cargo ship Taichu Maru (1906 GRT) and scores two dud torpedo hits on the Japanese auxiliary minesweeper Keijin Maru No.2 (433 GRT) in position 33º59'N, 136º24'E. (see map)
4 Nov 1943
USS Lapon (Cdr. L.T. Stone) ends her 2nd war patrol at Pearl Harbour. She departs Pearl Harbour three days later bound for the Mare Island Navy Yard to solve the problems with her engines and general overhaul.
22 Jan 1944
USS Lapon (Cdr. L.T. Stone) departs Pearl Harbour for her 3rd war patrol. She is ordered to patrol in the South China Sea.
9 Mar 1944
USS Lapon (Cdr. L.T. Stone) torpedoes and sinks the Japanese merchant cargo ships Toyokuni Maru (5792 GRT) and Nicherei Maru (5396 GRT) in the South China Sea in position 19º21'N, 116º09'E. (see map)
15 Mar 1944
USS Lapon (Cdr. L.T. Stone) sinks a Japanese sampam with gunfire in the South China Sea north-east of Luzon, Philippines in position 19º57'N, 119º46'E. (see map)
18 Mar 1944
USS Lapon (Cdr. L.T. Stone) torpedoes and sinks the Japanese troop transport Hokoroku Maru (8359 GRT) in the South China Sea about 250 nautical miles south-west of Hong Kong in position 19º24'N, 116º50'E. (see map)
1 Apr 1944
USS Lapon (Cdr. L.T. Stone) ends her 3rd war patrol at Fremantle, Australia.
25 Apr 1944
USS Lapon (Cdr. L.T. Stone) departs Fremantle for her 4th war patrol. She is ordered to patrol in the South China Sea.
24 May 1944
While operating in the South China Sea USS Lapon (Cdr. L.T. Stone) torpedoes and sinks the Japanese army cargo ships Wales Maru (6586 GRT) in position 07º16'N, 109º04'E and Bizen Maru (4667 GRT) in position 07º20'N, 109º20'E. (see map)
6 Jun 1944
USS Lapon (Cdr. L.T. Stone) ends her 4th war patrol at Fremantle.
29 Jun 1944
USS Lapon (Cdr. L.T. Stone) departs Fremantle for her 5th war patrol. She is ordered to patrol in the South China Sea.
18 Jul 1944
USS Lapon (Cdr. L.T. Stone) torpedoes and sinks the Japanese survey ship Kyodo Maru No.36 (1499 GRT) and the Japanese auxiliary submarine chaser Kamo Maru (234 GRT) north-west of Labuan, Borneo in position 08º22'N, 116º45'E and torpedoes and sinks the Japanese auxiliary submarine chaser Kurama Maru (233 GRT) off the southern end of Palawan in position 08º22'N, 116º40'E. (see map)
31 Jul 1944
USS Lapon (Cdr. L.T. Stone) torpedoes and sinks the Japanese merchant tanker Tenshin Maru (5061 GRT) off the southwest tip of Palawan in position 08º50'N, 116º00'E. (see map)
10 Aug 1944
USS Lapon (Cdr. L.T. Stone) ends her 5th war patrol at Fremantle.
4 Sep 1944
USS Lapon (Lt.Cdr. D.G. Bear) departs Fremantle for her 6th war patrol. She is ordered to patrol in the South China Sea.
22 Sep 1944
USS Lapon (Lt.Cdr. D.G. Bear) torpedoes and sinks the Japanese army cargo ship Jungen Go (1610 GRT) in the South China Sea, west of Luzon in position 15º22'N, 119º17'E. (see map)
27 Sep 1944
USS Lapon (Lt.Cdr. D.G. Bear) torpedoes and sinks the Japanese merchant tanker Hokki Maru (5599 GRT) in South China Sea, west of Luzon in position 15º50'N, 117º41'E. (see map)
10 Oct 1944
USS Lapon (Lt.Cdr. D.G. Bear) torpedoes and sinks the Japanese troop transport Ejiri Maru (6968 GRT) in the South China Sea west of Luzon in position 16º10'N, 119º44'E. (see map)
31 Oct 1944
USS Lapon (Lt.Cdr. D.G. Bear) ends her 6th war patrol at Fremantle.
23 Nov 1944
USS Lapon (Lt.Cdr. D.G. Bear) departs Fremantle for her 7th war patrol. She is ordered to patrol in the Philippines.
21 Jan 1945
USS Lapon (Lt.Cdr. D.G. Bear) ends her 7th war patrol at Pearl Harbour.
25 Jan 1945
USS Lapon (Lt.Cdr. D.G. Bear) departs Pearl Harbour bound for the Mare Island Navy Yard for a major overhaul.
31 Jan 1945
USS Lapon (Lt.Cdr. D.G. Bear) arrives at the Mare Island Navy Yard.
22 Apr 1945
With her overhaul completed USS Lapon (Lt.Cdr. D.G. Bear) arrives at Pearl Harbour.
4 Jun 1945
USS Lapon (Lt.Cdr. D.G. Bear) arrives at Guam.
6 Jun 1945
USS Lapon (Lt.Cdr. D.G. Bear) departs Guam for her 8th war patrol. She is ordered to patrol in Japanese home waters.
23 Jul 1945
USS Lapon (Lt.Cdr. D.G. Bear) ends her 8th war patrol at Midway.