The Shimushu-class escort ships (占守型海防艦, Shimushu-gata kaibōkan) were a class of kaibōkan (equivalent to US destroyer escorts or British frigates) built for the Imperial Japanese Navy just prior to World War II. Four ships out of an initially planned 16 vessels were completed.

Shimushu (占守) was the lead ship of her class of four escort ships built for the Imperial Japanese Navy during World War II. The Japanese called these ships Kaibōkan, "ocean defence ships", (Kai = sea, ocean, Bo = defence, Kan = ship), to denote a multi-purpose vessel.

Shimushu is cheerful and high-spirited. She, like some other ships, has a vocal tic; hers being "Ssu" (っす). As an Escort ship, Shimushu has a reduced ASW score requirement for performing Opening Anti-Submarine attacks, needing only at least 60 ASW instead of the normal 100. If …

SHIMUSHU is reassigned back to the No. 2 Escort Unit with KASHII, light cruiser NATORI and destroyers. Departs Camranh Bay. 28 December 1941: Reassigned to 1st Southern Expeditionary Fleet. S of Hainan Island.

A Nos 790-793.

Shimushu (占守?) was lead ship of its class, the foundation of all of Japan's kaibokan. Shimushu participated in the landings in Thailand, escorting the 55th IJA Infantry Division to landings at Nakhon on 8 December 1941.

Kaibōkan (海防艦, "sea defence ship") or coastal defense ship[FN 1] was a type of naval ship used by the Imperial Japanese Navy during World War II for escort duty and coastal defense. [1] . The term escort ship was used by the United States …

Shimushu Class Escort Vessels (Shimushun 1940) The four units of the Shimushu Class were ordered by the IJN in 1937 as general purpose escorts. They were also fitted with minesweeping gear. This gear was removed in May 1942 and the classes' depth charge capacity was …

The Shimushu-class escort ships (占守型海防艦 Shimushu-gata kaibōkan?) were a class of ships in the service of the Imperial Japanese Navy during World War II. The Japanese called these ships Kaibōkan, "ocean defence ships", (Kai = sea, ocean, Bo = defence, Kan = ship), to denote a multi-purpose vessel.

Naval service: Ishigaki 31.5.1944 was sunk off Kuriles by US submarine Herring. Shimushu 25.11.1944 was damaged by US submarine Haddo. Hachijo 11.5.1945 was hard damaged on a mine and was not under repair. Kunashiri was wrecked 4.6.1946 during repatriation service off Omaezaki, Suruga Wan, abandoned 25.6.1946 and stricken. In 1947 Shimushu was transferred to the USSR on reparation.