 The two Ibuki @-@ class cruisers were ordered in November 1941 as part of the IJN 's Rapid Naval Armaments Supplement Programme ( <unk> , <unk> Maru Kyū <unk> , <unk> @-@ <unk> Dai @-@ Ichi <unk> <unk> <unk> ? ) . Both ships were laid down without names , just as Warships No. 300 and No. 301 , but the former was named Ibuki on 5 April 1943 . 
