IJN Etorofu in May 1943.

Kaibōkan (海防艦, "sea defence ship") or coastal defense ship refers to a type of naval ship used by the Imperial Japanese Navy during World War II for escort duty and coastal defense. The term escort ship is used by the United States Navy to describe this category of Japanese ships.[1]

In the course of the war, the design was simplified and scaled down to permit larger numbers of vessels to be built more quickly.


Shimushu class (Ishigaki)

Etorofu class (Matsuwa)

Mikura class (Chiburi)

Ukuru class (Okinawa)


In addition two former Chinese light cruisers were used, renamed the Ioshima and Yasoshima.

See also


  1. Bob Hackett, Sander Kingsepp and Peter Cundall (15 September 2013). "Stories and Battle Histories of the IJN's Escorts". Combinedfleet.com. Retrieved 2013-10-19.

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