Operation RY

Operation RY
Map of the Coral Sea area with Nauru and Ocean (Banaba) islands in the top right corner.
Planned	April 1942
Objective	Occupation of Nauru and Ocean islands
Date	10 May to 30 August 1942
Executed by	Imperial Japanese Navy
Outcome	Postponed on 15 May 1942; completed successfully on 29–30 August 1942
Casualties	1 minelayer, 1 auxiliary ship sunk

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Operation RY was the Imperial Japanese plan to invade and occupy Nauru and Ocean islands in the south Pacific during the Pacific conflict of World War II. The operation was originally set to be executed in May 1942 immediately following Operation MO and before Operation MI, which resulted in the Battle of Midway. The primary reason for the operation was to exploit the islands' supplies of phosphate. After a postponement due to interference by enemy forces, the operation was completed in August 1942.