Japanese whale factory ship Nisshin Maru bound for the Ross Sea, Antarcticaccording to the Australia Station Intelligence Summary dated 7 January 1956

An item reported that the Japanese whaling expedition with the 16,800 tons whale factory ship Nisshin Maru leaving Japan on 1 November 1955 started her fishing operations in the vicinity of the Ross Sea, Antarctic.

Source

Website Royal Australian Navy, Sea Power Centre.