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"
Port St Mary and was demolished in the 1970s, with the village's garden of remembrance and war memorial occupying the site. Port St Mary is served by St Columba's Catholic Church, which lies just outside the village and is shared with Port Erin. It is a chapel of ease in the parish of St Mary's with St Columba's in the Archdiocese of Liverpool. There are two pubs in Port St Mary - the Albert and The Railway Station, the Bay View Hotel having closed a number of years ago. The Railway Station Pub being adjacent to Port St Mary railway station on the