The 1st Naval Armaments Supplement Programme (マル1計画, 第一次補充計画, Maru 1 Keikaku, Dai-Ichi-Ji Hojū Keikaku), otherwise known as the "Circle One" plan was the...

2nd Naval Armaments Supplement Programme (マル2計画, 第二次補充計画, Maru 2 Keikaku, Dai-Ni-Ji Hojū Keikaku) otherwise known as the "Circle Two" Plan was the second...

Armaments Supplement Programme (マル3計画, 第三次海軍軍備補充計画, Maru 3 Keikaku, Dai-San-Ji Kaigun Gunbi Hojū Keikaku) otherwise known as the "Circle Three" Plan was the...

Supplement Programme (改マル5計画, 戦備促進第二次実行計画, Kai-Maru 5 Keikaku, Senbi-Sokushin Dai-Ni-Ji Jikkō Keikaku) was one of the wartime armaments expansion plans...

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...

Armaments Supplement Program (マル4計画, 第四次海軍軍備充実計画, Maru 4 Keikaku, Dai-Yo-Ji Kaigun Gunbi Jūjitsu Keikaku) was one of the armaments expansion plan of the...

in 1931-36 under the Maru 1 Keikaku. They have two sub classes, this article handles them collectively. Improved model of the No.1-class. The IJN tried...

Temporal Naval Armaments Supplement Programme (マル臨計画, 情勢ニ応ズル軍備欠陥補充, Maru Rin Keikaku, Jōsei ni ouzuru Gunbi-Kekkan Hojū) is one of the armaments expansion...

Supplement Programme (マル戦計画, 昭和十八年度戦時艦艇建造計画, Maru Sen Keikaku, Shōwa-Jūhachi-Nendo Senji Kantei-Kenzō Keikaku) was the 1943-44 War Programme to fund the...

Additional Naval Armaments Supplement Programme (マル追計画, 追加計画, Maru Tsui Keikaku, Tsuika Keikaku) was one of the naval expansion plans of the Imperial Japanese...