群岛海
After refit "Apu" resumed her duties on the Archipelago Sea as a state-owned icebreaker and remained in service through the Second World War until 1959 even though during her last years in service her assistance in the Archipelago Sea was described being "more of a moral nature". The 60-year-old icebreaker was decommissioned on 7 April 1959 and broken up shortly afterwards. She was replaced by the second "Karhu" class icebreaker, "Murtaja".