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NavSource Online: Submarine Photo Archive
Patch contributed by Mike Smolinski

Trepang (SS-412) (AGSS-412)

Radio Call Sign: November - Kilo - Sierra - Zulu
Awards, Citations and Campaign Ribbons

Precedence of awards is left to right
Navy Unit Citation - Asiatic-Pacific Campaign Medal (5) - World War II Victory Medal
Balao Class Submarine: Laid down, 25 June 1943, at Mare Island Navy Yard, Vallejo, CA..; Launched, 23 March 1944; Commissioned USS Trepang (SS-412), 22 May 1944; Decommissioned, 27 June 1946, at Mare Island Navy Yard; Laid up in the Pacific Reserve Fleet, Mare Island Group; Reclassified Auxiliary Research Submarine (AGSS-412), 11 June 1962; Struck from the Naval Register, 30 June 1967; Final Disposition, sunk as a target, 16 September 1969 by, Henderson (DD-785) and Fechteler (DD-870), during "Strike Ex 4-69." Trepang was awarded the Navy Unit Commendation and earned five battle stars for World War II service.

As built to the specifications: Displacement, Surfaced 1,526 t., Submerged 2,391 t.; Length 311' 8"; Beam 27' 3"; Draft 15' 3"; Speed, Surfaced 20.25 kts, Submerged 8.75 kts; Cruising Range, 11,000 miles surfaced at 10 kts; Submerged Endurance, 48 hours at 2 kts; Operating Depth, 400 ft; Complement 6 Officers 60 Enlisted; Armament, ten 21" torpedo tubes, six forward, four aft, 24 torpedoes, one 5"/25 deck gun, one single 40mm gun mount, one single 20mm gun mount, two .50 cal. machine guns; Patrol Endurance 75 days; Propulsion, diesel-electric reduction gear, Fairbanks Morse diesel engines, 5,400 HP, Fuel Capacity, 116,000 gal., four Elliot Motor Co. electric main motors with 2,740 shp, two 126-cell main storage batteries, two propellers.
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Trepang190kThe Trepang (SS-412) on ways #3 at Mare Island Navy Yard on 6 July 1943. Sterns of the Ashland (LSD-1) and the Copahee (CVE-12) are on the right. Mare Island Navy Yard photo #4923-43 series, courtesy of Darryl L. Baker.
Spadefish & Trepang 229k Middle top right of the photo shows the Spadefish (SS-411) & Trepang (SS-412) under construction at Mare Island Navy Yard, 11 July 1943. The carrier under construction is the Independence (CV-22). USN photo # 5083-43, courtesy of Darryl L. Baker.
Trepang250kAft plan view of the Long (DMS-12) at Mare Island Navy Yard on 30 October 1943 at the conclusion of her overhaul at the yard which started on 27 Sep 1943. The Trepang (SS-412) is on the building ways behind the Long . Mare Island Navy Yard photo # 7374-43, courtesy of Darryl L. Baker.
Trepang221kAfter plan view of the Hogan (DMS-6) at Mare Island on 11 January 1944. The Trepang (SS-412) is on her building ways in the background.USN photo # 296-44, courtesy of Darryl L. Baker.
Trepang180kForward plan view of the Hogan (DMS-6) at Mare Island on 11 January 1944. The Trepang (SS-412) is on her building ways in the background.USN photo # 297-44, courtesy of Darryl L. Baker.
Trepang414kRadm M. S. Tisdale presenting the box containing christening champagne bottle to Mrs. R. M. Davenport (Ship's Sponsor) with Mrs. Garvey (Matron of Honor) and LCDR Davenport (Boat's Commanding Officer) watching at Mare Island on 23 March 1944.USN photo # 1853-3-44, courtesy of the Valllejo Naval and Historical Museum. Photo contributed by Darryl L. Baker.
Trepang406kMrs. R. M. Davenport (Ship's Sponsor) with champagne bottle for christening, LCDR Davenport (Commanding Officer) and Mrs. Garvey (Matron of Honor) with roses are seen prior to the launching at Mare Island on 23 March 1944.USN photo # 1856-3-44, courtesy of the Valllejo Naval and Historical Museum. Photo contributed by Darryl L. Baker.
Trepang498kMrs. R. M. Davenport (Sponsor) is seen at the bow of the Trepang (SS-412) prior to the submarine's launching at Mare Island on 23 March 1944. USN photo # 1858-3-44, courtesy of the Valllejo Naval and Historical Museum. Photo contributed by Darryl L. Baker.
Trepang151k Mrs. Roy M. Davenport (Sponsor), left and Mrs. Richard Garvey (Matron of Honor) are seen at the bow of the Trepang (SS-412) prior to her launching at Mare Island on 23 March 1944. USN photo # 1854-44, courtesy of Darryl L. Baker.
Trepang81kTrepang (SS-412) launching, 23 March 1944, at Mare Island Navy Yard, Vallejo, CA. The officer on the left is LCDR Roy M. Davenport (PCO of Trepang); his wife is doing the christening honors. The woman on the far right is Mrs. Richard Garvey (Matron of Honor).USN photo # 1852-44, courtesy of Darryl L. Baker.
Trepang643kView of the official launching party of the Trepang (SS-412) prior to the submarine's launching at Mare Island on 23 March 1944. USN photo # 1858-3-44, courtesy of the Valllejo Naval and Historical Museum. Photo contributed by Darryl L. Baker.
Trepang685kSponsor & party at launching of Trepang (SS-412).
Half way down ways.		USN photo # 80-G-448211 from National Archives and Records Administration (NARA), College Park, Maryland, courtesy of Sean Hert.
Trepang1.30kTrepang (SS-412) at the end of the ways at her launching at Mare Island on 23 March 1944.USN photo # 1851-3-44, courtesy of the Valllejo Naval and Historical Museum. Photo contributed by Darryl L. Baker.
Trepang90k The Trepang (SS-412) shortly after her launching at Mare Island on 23 March 1944.USN photo # 1853-44, courtesy of Darryl L. Baker.
Trepang219kCommissioning party of the Trepang (SS-412) at Mare Island on 22 May 1944. Seated left to right: LCDR Roy M. Davenport, CO; Mrs. Roy M. Davenport (Sponsor), Mrs. Loraine Garvey (Maid of Honor) and Lt Richard S. Garvey, XO. Ship's officer are standing in the rear. USN photo # 3063-44, courtesy of Darryl L. Baker.
Trepang222kPhoto of the commissioning ceremony aboard Trepang (SS-412) at Mare Island on 22 May 1944. LCDR Roy M. Davenport is in the center of the photo. USN photo # 3068-44, courtesy of Darryl L. Baker.
Trepang195kPhoto of the Commissioning plaque of the Trepang (SS-412) display at the Vallejo Naval & Historical Museum, October 2004. Courtesy of Darryl L. Baker.
Trepang188kPhoto of the Commissioning plaque and the Christening bottle holder used in the launching of the Trepang (SS-412) display at the Vallejo Naval & Historical Museum, October 2004. Courtesy of Darryl L. Baker.
Trepang223kAft plan view of Trepang (SS-412) docked in ARD-21 at Mare Island on 3 July 1944. Good view of the stern tubes and propellers. USN photo # 4143-44, courtesy of Darryl L. Baker.
Trepang275k Forward plan view of Trepang (SS-412) docked in ARD 21 at Mare Island on 3 July 1944. USN photo # 4144-44, courtesy of Darryl L. Baker.
Spot & Trepang199k Bow view of the Spot (SS-413) at her outfitting berth at Mare Island on 3 July 1944. The Trepang (SS-412) is in the background returning from bay trials. USN photo # 4142-44, courtesy of Darryl L. Baker.
Trepang171k Bow on view of Trepang (SS-412) departing Mare Island and being accompanied by a escort vessel, on 12 July 1944. USN photo # 4478-44, courtesy of Darryl L. Baker.
Trepang138k Broadside view of Trepang (SS-412) off Mare Island on 12 July 1944. USN photo # 4480-44, courtesy of Darryl L. Baker.
Trepang62kTrepang (SS-412) underway off Mare Island Navy Yard, Vallejo, CA., 12 July 1944.USN photo # 4477-7-44, courtesy of Darryl L. Baker.
Trepang55kTrepang (SS-412) underway off Mare Island Navy Yard, Vallejo, CA., 12 July 1944.USN photo (Mare Island Navy Yard photo 4479-44 series), courtesy of Darryl L. Baker.
Reserve 205k Sixteen page PDF history of Trepang (SS-412). PDF courtesy of Scott Koen & ussnewyork.com.
Reserve 205k Japanese landing ship HIJMS No.146 underway in Hiroshima Bay, circa 1945. She was torpedoed and sunk on 28 April 1945 by the submarine Trepang (SS-412) off Osezaki (32 degrees 24' N, 128 degrees 40' E). Photo from ww2incolor.com. via Robert Hurst.
Trepang121kCommissioning Pennant of Trepang (SS-412) after her second war patrol. The 86,000 Tons refers to the total Japanese tonnage sunk or damaged during these patrols, on display at the Vallejo Naval & Historical Museum, October 2004. Courtesy of Darryl L. Baker.
Lizardfish and friends 40k The submarine tender Sperry (AS-12), with a gaggle of submarines nestled nearby:
Tilefish (SS-307) ,
Brill (SS-330),
Trepang (SS-412) ,
Jallao (SS-368),
Spot (SS-413) and Lizardfish (SS-373), late 1945 - early 46.		 Courtesy of John Hummel, USN (Retired).
Trepang84kTrepang (SS-412) battle flag reflecting her record of enemy sinkings.Courtesy of Darryl L. Baker.
Mare Island Reserve Fleet137kReserve fleet at Mare Island, circa January 1946. There are 52 submarines and 4 Sub Tenders in this photo. This photo is a Berthing list identifying the ships in the picture. Photo commemorating 50 years, U. S. Submarine Veterans of WW II 1996 calendar, courtesy of Darryl L. Baker.
Mare Island Reserve Fleet2.80kPhoto of the Reserve fleet at Mare Island, circa January 1946. There are 52 submarines and 4 Sub Tenders in this photo. Whether coincidental or on purpose, the number of boats in the photo is the same as that which were lost in WW II.
From back to front and left to right, first group of 12 boats:
Sand Lance (SS-381)
Tunny (SS-282)
Aspro (SS-309)
Lionfish (SS-298)
Guvania (SS-362)
Sunfish (SS-281)
Macabi (SS-375)
Gurnard (SS-254)
Pampanito (SS-383)
Mingo (SS-261)
Guitarro (SS-363)
Bashaw (SS-241)
From back to front and left to right, second group of 12 boats:
Sealion (SS-315)
Hammerhead (SS-364)
Bream (SS-243)
Seahorse (SS-304)
Tinosa (SS-283)
Pintado (SS-387)
Mapiro (SS-376)
Pipefish (SS-388)
Moray (SS-300)
Batfish (SS-310)
Hackleback (SS-295)
Bluegill (SS-242)
From back to front and left to right, third group of 12 boats:
Hawkbill (SS-366)
Menhaden (SS-377)
Perch (SS-313)
Loggerhead (SS-374)
Barbero (SS-317)
Baya (SS-318)
Hardhead (SS-365)
Spadefish (SS-411)
Springer (SS-414)
Devilfish (SS-292)
Kraken (SS-370)
Dragonet (SS-293)
From back to front and left to right, fourth group of 12 boats:
Lamprey (SS-372)
Piranha (SS-389)
Manta (SS-299)
Pargo (SS-264)
Rancador (SS-301)
Archerfish (SS-311)
Mero (SS-378)
Sawfish (SS-276)
Spot (SS-413)
Lizardfish (SS-373)
Jallao (SS-368)
Icefish (SS-367)
From back to front and left to right, last group of 4 boats:
Steelhead (SS-280)
Puffer (SS-268)
Stickleback (SS-415)
Trepang (SS-412)
From back to front, Submarine Tenders group of 4 ships:
Pelias (AS-14)
Aegir (AS-23)
Euryale (AS-22)
Griffin (AS-13)
Photo commemorating 50 years, U. S. Submarine Veterans of WW II 1996 calendar, courtesy of James P. Marion, III.
Trepang188k Painting by the artist G. Levey of the Trepang (SSN-674) & Trepang (SS-412) underway. Courtesy of SSN 674 - USS TREPANG.
Mare Island Reserve Fleet227k The Icefish (SS-367) in the Mare Island Reserve Fleet on 13 October 1948. The other subs outbaord of Icefish are Jallao (SS-368), Trepang (SS-412), Spot (SS-413) and Stickleback (SS-415). USN photo # 1916-10-48, courtesy of Darryl L. Baker.
Reserve 1.12k Hackleback (SS-295), Trepang (SS-412) and Lizardfish (SS-373) in reserve at Mare Island in May 1953. Photo courtesy of the files of the Vallejo Naval and Historical Museum, courtesy of Darryl L. Baker.
View the Trepang (SS-412)
DANFS history entry located on the Haze Gray & Underway Web Site.
Crew Contact And Reunion Information
U.S. Navy Memorial Foundation
Fleet Reserve Association
Additional Resources and Web Sites of Interest
Ep-21 (1) - Victory At Sea ~ Full Fathom Five - HQ

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