The was a class of patrol boats of the

Imperial Japanese Navy The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved followin ...

(IJN), serving during World War II. 2 vessels were converted from s in 1940.

Background

* In 1939, the IJN was liberated from

London Naval Treaty The London Naval Treaty, officially the Treaty for the Limitation and Reduction of Naval Armament, was an agreement between the United Kingdom, Empire of Japan, Japan, French Third Republic, France, Kingdom of Italy, Italy, and the United Stat ...

, and they built many s. On the other hand, aging of the ''Minekaze''-class destroyers was serious. Their boilers were worn down very much because they were destroyers. Some ''Minekaze''s were not able to show 30 knots speed. The Navy General Staff made ''Confidential Document No.456'', an order to rebuild about four ''Minekaze''-class destroyers and six s into patrol boats. The IJN chose ''Shimakaze'' and ''Nadakaze'' among the ''Minekaze'' class.

Rebuilt

* ''Shimakaze'' and ''Nadakaze'' were sent to

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for rebuilding. B turret, four torpedo tubes, and two boilers were removed in 1940. In this point in time, they left a feature of the destroyer. * Second half of 1941, the IJN rebuilt them once again for war preparations.About the time of their entering a dock, correct historical materials were not left. They were rebuilt to the landing craft carrier. They were removed Y turret and torpedo tubes, and the enclosed well deck. Furthermore, a slope for was installed at the stern. Well-deck ruins were able to accommodate 250 troops (for two companies of Navy Landing Force).

Service

* 8 December 1941: Sortie for invasion of Batanes Islands. (''No.1'' and ''No.2'') * 24 December 1941: Sortie for invasion of Lamon Bay. (''No.1'' and ''No.2'') * 11 January 1942: Sortie for Battle of Manado. (''No.1'', ''No.2'' and ''No.34'') * 12 February 1942: Sortie for invasion of Makassar. (''No.1'' and ''No.2'') * 20 February 1942: Sortie for invasion of

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. (''No.1'', ''No.2'' and ''No.39'') * (after): The IJN which finished First Phase Operations allotted them to the convoy escort operations and ''No.1'' and ''No.2'' were sunk by Allied submarines.

Ships in class

Footnotes

Bibliography

*, ''History of Pacific War Vol.62, "Ships of the Imperial Japanese Forces"'',

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