As war with the United States became increasingly likely over the Second Sino-Japanese War, and particularly after the Japanese seizure of French Indochina in mid-1940, all design work on battleships was diverted in early 1941—even though the A-150's design was nearly complete—in order to focus on higher-priority warships like aircraft carriers and cruisers. Two A-150s, provisionally designated as Warships Number 798 and 799, were projected in a 1942 building program. Under this plan, 798 would have been built in the same dock as , while 799 would be built in Kure in the same dock as after a fourth "Yamato"-class ship was launched. The ships would have then have been finished in 1946–1947, but the war's turn against the Japanese after the Battle of Midway meant that the need for ships other than battleships never abated.