file created: 12/07/02 01:05:54 , last update: 06/19/00
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SS-237 Trigger
United States Navy submarine
Class Laid down, Shipyard LaunchedCommissioned Disabled and Why
Gato 1941/02/01
Mare Island Naval Shipyard, Vallejo, Cal. 		1941/10/22 1942/01/30 1945/03/28
sunk
Namesake: The triggerfish is any of numerous deep-bodied fishes of warm seas having an anterior dorsal fin with two or three stout erectile spines
TTD differences from class:44/08: 1x102/50 cal, 1x40, 1x20 Mk 10, SJ radar
Camouflage:


WW II combat actions:
From Till Operation Force Action Source
42/05/22 42/05/29?     sail from Mare Island to P.H.   66 
42/05/29 42/06/09   7.2 200 miles N of Oahu   66 
42/06/06       damage(reefs) off Midway   82 
42/06/09 42/06/26     P.H. - repairs   82 
42/06/26 42/08/1?   8.5 patro01: Aleutians - no attack   82  81 
42/08/08       patro01: Dutch Harbor   66 
42/09/1? 42/09/23     P.H. - refit   66 
42/09/23 42/11/08     patro02: off Japan   82 
42/10/05       patro02: disabling (guns, torpedoes) Shinkoku Maru (3991 BRT)   82 
42/10/17       patro02: sinking AK s/s Holland Maru (5869 BRT - JANAC) near mouth of Bungo Suido (32-21N, 132-04E)   82  83  85
42/10/17       patro02: attacking DD, attacked by depth charges   82 
42/10/20       patro02: reports damaging large AO   82 
42/10/24       patro02: damaging AO Nissho Maru (10526 BRT) in Bungo Suido (32-06N, 132-34E)   82  85 
42/11/08 42/12/03     P.H. - refit   82 
42/12/03 43/01/22     patro03: off Tokio Bay   82 
42/12/20       patro03: lay 19 Mk 12 mines off Inubo Saki N of Tokio Bay   82 
42/12/22       patro03: sinking (mines) Teifuku Maru (5198 BRT - JANAC)   82  83 
42/12/22       patro03: sinking AK s/s Joshu Maru S of entrance to Tokio Bay (34-52N, 139-49E)   85 
42/12/31       patro03: sinking freighter   66 
43/01/01       patro03: damaging AP Shozan Maru (35-55N, 140-55E)   85 
43/01/10       patro03: sinking Okikaze (JANAC) off Tokio Bay (35-02' N., 140-12' E.)   82  83 
43/01/22 43/02/09     P.H. - refit   82 
43/02/09 43/04/06     patro04: Palaus   82 
43/02/13       patro04: Midway - refuel   66 
43/02/27       patro04: attacking large cargo, attacked by plane   82 
43/03/04       patro04: attackng feighter - bad weather   82  66 
43/03/15       patro04: sinking AK Momoha Maru (3103 BRT - JANAC) from convoy 150 nm NW of Manus (00-02S, 145-05E)   82  83  85
43/03/15       patro04: damaging Florida Maru (5854 BRT) (00-00N, 145-00E)   82  85 
43/03/16       patro04: attacking cargo - 1 torpedo circled (run over Trigger)   82 
43/03/20       patro04: disabling ex PG Choan Maru Nr.2 (2613 BRT) off Admiralties (03-44N, 144-12E)   82  85 
43/04/06 43/04/30     P.H. - refit   82 
43/04/30 43/06/22     patro05: Japan coast   82 
43/05/22       patro05: found IJN off Tokio Bay  
43/05/28       patro05: damaging AO Koshin Maru (975 BRT) off Irosaki (34-33Nm 138-50e)   82  85 
43/05/29       patro05: attacking small cargo - torpedo prematured   66 
43/06/01       patro05: sinking cargo Noborikawa Maru (2182 BRT - JANAC) off Kominato, S Honshu (35-02N, 140-14E)   82  85 
43/06/10       patro05: disabling Hijo (almost year) 18 nm off Irozaki (34-13N, 139-50E)   82  85 
43/06/22 43/09/01     P.H. - overhaul, training   82 
43/09/01 43/09/30     patro06: East China Sea   82 
43/09/17       patro06: attacking cargo Yowa Maru (dud torpedoes)   82 
43/09/18       patro06: sinking AK Yowa Maru (6435 BRT - JANAC) 70 nm NW of Okinawa (27-20N, 126-53E)   82  83  85
43/09/21       patro06: attacking convoy N of Keelung, Formosa (26-27N, 122-40E):   82  85 
43/09/21       patro06: sinking AO Shirija (14050 BRT - JANAC accepted only 6500 BRT)   82  83 
43/09/21       patro06: sinking AO Shojo Maru (7498 BRT - JANAC) from convoy   82  83 
43/09/21       patro06: damaging AO (7300 BRT)   82 
43/09/21       patro06: sinking cargo Argun Maru (6662 BRT - JANAC)   82  83 
43/09/22       patro06: disabling AK Gyoku Maru (6854 BRT) N of Keelung, Formosa (26-27N, 122-40E)   82  85 
43/09/30 43/10/22     Midway - refit   82 
43/10/22 43/12/08     patro07: East China Sea, Yellow Sea   82 
43/11/01       patro07: damaging 2 transports   82 
43/11/02       patro07: sinking AP Delagoa Maru (7148 BRT - JANAC) from convoy S of Honshu (28-30N, 135-35E)   82  83  85
43/11/02       patro07: sinking cargo Yawata Maru (1852 BRT - JANAC)   82  83 
43/11/13       patro07: attacking convoy (9 merchants, 4 DD)   82 
43/11/13       patro07: sinking Nachisan M. (4443 BRT - JANAC) - damaged by DDs in East China Sea (32-55N, 124-57E)   82  83  85
43/11/21       patro07: sinking cargo Eizan Maru (1681 BRT - JANAC) in Yellow Sea (36-40N, 125-31E)   82  83  85
43/12/08 44/01/01     P.H - refit  
44/01/01 44/02/23     patro08: Truk <> Guam lanes   82 
44/01/27       patro08: attacking RO class submarine   82  66 
44/01/31       patro08: sinking AS Jasukuni Maru (11933 BRT - JANAC) NW of Truk (09-21N, 147-02E)   82  83  85
44/01/31       patro08: damaging Micishio NW of Truk (09-50N, 147-06E)   85 
44/01/31       patro08: reports sinking AM Nasami (really sunk by planes 44/04/01)   82 
44/02/23 44/03/23     P.H. - refit   82 
44/03/23 44/05/20     patro09: Palaus   82 
44/04/08       patro09: attacking convoy (20 s/s, 25 escorts) > damaged 300 nm NW of Saipan (19-06N, 142-36E)   82  66  85
44/04/09       patro09: again damaged by depth charges 300 nm NW of Saipan (19-03N, 142-31E)   85 
44/04/14 44/04/15     patro09: loan spare parts from Tang to repare compressor   82 
44/04/17       patro09: arrived area NW of Palau   81 
44/04/26       patro09: meet 6 ship convoy Macu 5   82 
44/04/27       patro09: sinking AP Miike Maru (11738) 90 nm N of Palau (08-34N, 134-53E) -JANAC   82  83  85
44/04/27       patro09: damaging frigate Kasado (870 BRT), AK Asosan M.(8811) (08-32N, 134-42E)   82  66  85
44/05/20 44/05/24     P.H. - refit   82 
44/05/31 44/09/0?     MINY - overhaul   82 
44/09/11 44/09/24     P.H.   66 
44/09/24 44/11/2?   wolfpack patro10: NE of Formosa - lifeguard duty   82  66 
44/10/12     wolfpack patro10: rescue VF-8 pilot   82 
44/10/19     wolfpack patro10: found IJN group - 5 CA/L, DDs   82 
44/10/30     wolfpack patro10: damaging AO Takane Maru SW of Toizaki, Kjushu (30-13N, 132-49E)   82  85 
44/10/30 44/11/03   wolfpack patro10: escort damaged Salmon to Saipan (with Silversides, Sterlet)   82 
44/11/03 44/11/08     patro10: Saipan - refuel   82  66 
44/11/08 44/11/17     patro10:   82 
44/11/17       patro10: ordered back to Guam   82 
44/11/2? 44/12/28     Guam - refit   82 
44/12/28 45/02/03     patro11: Bungo Suido, Kii Suido   82 
45/01/03       patro11: attacked by IJN SS > departed patrol area   82 
45/01/29       patro11: found large convoy - too far   82 
45/02/03 45/03/11     Guam - refit   82 
45/03/11 45/03/28     patro12: Nansei Shoto - wolfpack with Threadfin, Sea Dog   82 
45/03/18       patro12: sinking AK Tsukushi Maru #3 (1012 BRT-JANAC) NW of Okinawa (28-05N, 126-44E)   82  85 
45/03/18       patro12: damaging ship (4000 BRT)   82 
45/03/20       patro12: reports attacks from 45/03/18   82 
45/03/26       patro12: last meteo report - ordered to join Earl's Eliminators   82  66 
45/03/27       patro12: sinking cable layer Odate 160 nm SW of Nagasaki, Kjushu (30-40N, 127-50E)   85 
45/03/28       patro12: sunk(patrols Mikura, #33, #59) 40nm SE of Mijazaki, Kjushu (32-16N, 132-05E)   85 

Ship status, hull number changes...: 1945/05/01 presumed lost, 1945/07/11 struck from Navy List
Ship score (awards, enemy ships credited...): 11 Battle Stars, 12 patrols, PUC (patrols 5-7); 15/83245; Oikaze,Nasami(DM),Odate; 7 in tonnage, 11 in number of ships
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