吴镇守府
Submarine Squadron 4 was disbanded on 10 March 1942, and "I-55" was ordered back to Japanese home waters, and was reassigned to the Kure Guard Unit of the Kure Naval District. She departed Staring-baai on 16 March and arrived at Kure on 25 March 1942. Renumbered as on 20 May 1942, she operated from Kure, reassigned to Submarine Division 18 of the Kure Naval District on 1 April 1943 and to Submarine Division 33 of the Kure Submarine Squadron on 20 April 1943.