The TS Queen Mary is a historic Clyde steamer launched in 1933 at the William Denny shipyard in Dumbarton for Williamson-Buchanan Steamers. She is a steel-hulled vessel measuring 871 gross registered tons initially, later increased to 1014 GRT after a refit in 1956-1957, which involved replacing her original Scotch boilers with a single-ended boiler and installing a prominent funnel and new mainmast to meet regulations. Powered by three Parsons Marine Steam Turbines, she was capable of reaching a maximum speed of 19.7 knots during her trials, which was a notable achievement for a passenger steamer of her time. Designed to serve as a passenger vessel, she held a passenger certificate for 2,086, later reduced to 1,820, and was based in Glasgow at Bridge Wharf, carrying approximately 13,000 passengers weekly during the summer season, often sailing along the Arran coast and the Kyles of Bute. In 1935, her name was briefly changed to TS Queen Mary II under an agreement with Cunard Line, which aimed to free the name for their new flagship. She later became part of the London, Midland and Scottish Railway fleet in 1936, and subsequently under Caledonian Steam Packet Company after railway nationalization. During World War II, she served as a mail and passenger carrier to Scottish Islands. Post-war, she was refitted and returned to regular passenger service, including cruises from Gourock to locations such as Inveraray, Brodick, and Campbeltown. By the late 1960s, regular Glasgow sailings ended, but she continued to operate on cruise routes to various Scottish destinations until her retirement in 1977. After her retirement, TS Queen Mary was sold multiple times, with plans for conversion into a museum or commercial ventures, but these fell through. She was moored in London, refurbished in 1987, and later towed to Tilbury in 2009 for potential new uses. Her future became uncertain after ownership disputes and safety issues, but a significant campaign led to her return to the Clyde in 2016. Currently berthed at Glasgow's Princes' Dock, she is undergoing restoration as a heritage and education centre, with plans to reintroduce passenger cruising by 2024. The vessel remains a significant symbol of Scottish maritime history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.