Qualla: Sinkyo Maru

Sinkyo Maru: Introduction

Thu, 09 Apr 2026 00:00:00 GMT

Photo credit Shizuo Fukui, Public domain. At 23:48 on March 24, 1944, the USS Bowfin made radar contact with a Japanese convoy off the coast of Mindanao. The American submarine fired her first torpedo salvo, sinking the cargo liner Bengal Maru. Minutes later, she fired again. This time the target was Sinkyo Maru, a twelve-year-old cargo steamer that had been converted into every kind of warship the Imperial Japanese Navy needed: gunboat, minelayer, submarine chaser, troopship. The torpedoes struck, and Sinkyo Maru sank in three minutes. Sixty-one people -- twelve crewmen and forty-nine passengers -- died in the dark waters of the Philippine archipelago. It was an anonymous end for a ship that had sailed an extraordinary wartime odyssey.

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Image: Shizuo Fukui | Public domain

Sinkyo Maru: A Merchant Ship's Modest Origins

Thu, 09 Apr 2026 00:00:00 GMT

Photo credit Public domain. Sinkyo Maru began life as a civilian cargo steamer, built by the Uraga Dock Company in Uraga, Kanagawa. Her keel was laid on February 25, 1932; she launched on November 24 and was completed on April 11, 1933. She was a modest vessel, powered by a three-cylinder triple-expansion s...

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Image: Public domain

Sinkyo Maru: Pressed into the Imperial Navy

Thu, 09 Apr 2026 00:00:00 GMT

Photo credit Public domain. On September 15, 1940, the Japanese Navy requisitioned Sinkyo Maru. Within weeks she was attached to the Sasebo Naval District as an auxiliary gunboat, armed with three 12cm naval guns, machine guns, depth charge racks, and 32 depth charges. By January 1941, she was laying mines ...

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Image: Public domain

Sinkyo Maru: Wewak and the Kuril Islands

Thu, 09 Apr 2026 00:00:00 GMT

Photo credit Presumed official IJN photographer., Public domain. In late 1942, Sinkyo Maru was assigned to reinforce the Japanese campaign in New Guinea. She joined convoys carrying the 20th and 41st Divisions to Wewak -- dangerous runs through waters increasingly dominated by American submarines and aircraft. In January 1943, she embarked 399...

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Image: Presumed official IJN photographer. | Public domain

Sinkyo Maru: Three Minutes Off Mindanao

Thu, 09 Apr 2026 00:00:00 GMT

Photo credit Public domain. After a late-1943 refit at Mitsubishi Heavy Industries' shipyard in Yokohama, Sinkyo Maru was redesignated as an auxiliary transport and sent south again. She joined convoys through Okinawa, Taiwan, and on to Manila, arriving in mid-March 1944. On March 20, she departed Manila in...

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Image: Public domain