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  Sanko Maru
IJN
Cargo


25m x ? x ?


Ship History
Built by Osaka Iron Works K.K. for Dairen Kisen K.K. as a 5,461-tons cargo vessel. Launched on February 12, 1939 as Sanko Maru. Completed on May 8, 1939 and registered at Dairen (Dalian).

Wartime History
On December 3, 1940 requisitioned by the Imperial Japanese Navy (IJN) instruction No. 980 for use as a auxiliary collier/oiler attached to the Kure Naval District based at Kure.

PARTIAL HISTORY

On February 5, 1944 arrives at Palau and the next day HA-52 Type B midget submarine was transfered from Kizugawa Maru to Sanko Maru.

On February 12, 1944 departs Palau towing HA-52 midget submarine as part of "Convoy SO-903" with Tatsukiku Maru, Shinto Maru No. 1 escorted by subchasers CH-22, CH-39 and CHA-16 bound for Rabaul. Enroute, Maru towing HA-52 escorted by CH-39 detach off Mussau Island bound for Kavieng.

Sinking History
On February 16, 1944 the Sanko Maru towing HA-52 escorted by CH-39 were off Three Island Harbor on the northeast of New Hanover when spotted and attacked by B-25 Mitchells from 345th Bombardment Group (345th BG), 500th Bombardment Squadron (500th BS) strafe and sink Sanko Maru and damage HA-52. Later that afternoon, the same B-25 return and again strafe CH-39 exploding it and further strafe HA-52 claiming it as sunk.

Shipwreck
This vessel is lying on its starboard side on a sandy bottom covered with sea fans and soft corals at a depth of 22m. During 1987, HA-52 Type B midget submarine was discovered 50m off the main mast.

References
Some sources identify this vessel as "Taisyo Maru" incorrectly.
Combined Fleet - IJN SANKO MARU: Tabular Record of Movement
Combined Fleet - Midget Submarines in the Bismarcks 1943-1944
Warpath Across The Pacific (1996) pages 130-134, 447 (index Subchaser #39)

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Last Updated
June 2, 2023

 

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