SS Cushag was sold once more, this time to a London broker, from whom she was purchased by the Isle of Man Steam Packet Company in May 1920, at a cost of £22,000 (equivalent to £). Small and drawing so little water, she was mostly used for cargo trade in the Island's smaller ports - Port St Mary, Peel, Laxey and Castletown. After over 20 years service with the Company, she was sold to London agents in January 1943, and then went on to Stornoway on the Isle of Lewis for four years. She transferred to Kirkwall in Orkney in 1947. "Cushag"
Communications in the Isle of Man on as their manager on the island. By 1901 there were 600 subscribers, and the telephone system had been extended to Ramsey, Castletown, Peel, Port Erin, Port St. Mary and Onchan. On 1 January 1912 the National Telephone Company was nationalised and merged into the General Post Office by the Telephone Transfer Act 1911. Only Guernsey, Portsmouth and Hull remained outside of the GPO. In 1922, the General Post Office offered to sell the island's telephone service to the Manx government, but the offer was not taken up. A similar arrangement in Jersey for that island's telephone service was concluded