The RAN also played a role in the disarmament of Japan, assisting in the scuttling of former Imperial Japanese Navy ships, in one instance took part in the sinking of seven submarines of Kyushu as part of Operation Bottom. When Indian and New Zealand contingents began to withdraw from the BCOF, the operation became a predominantly Australian operation. In 1948, Kure naval base was turned over to Australia, and became known as . When North Korea invaded South Korea on 25 June 1950, one RAN ship was on station as part of BCOF. The Australian Government immediately offered for United Nations service. Eventually, all RAN ships in the area were transferred to the command of British Commonwealth Forces Korea (BCFK).