The Rapid Naval Armaments Supplement Programme (マル急計画, 出師準備第一着作業建艦計画, Maru Kyū Keikaku, Suishi-Junbi Dai-Ichi Chakusagyō Kenkan Keikaku) was one of the armaments expansion plan of the Imperial Japanese Navy (IJN).
Background
In August 1941, the IJN started building warships for war. It extended to 293 vessels, 300,000 tons.
References
Rapid Naval Armaments Supplement Programme Wikipedia(Text) CC BY-SA