The ST Oriana was a small, yet notable, British tug vessel with a gross register tonnage (GRT) of 295, built in 1945 by Ferguson Brothers in Port Glasgow, Scotland. Originally named Empire Frieda, she was constructed for the Ministry of War Transport (MoWT) during the final year of World War II. The vessel measured 116 feet in length, with a beam of 27 feet 6 inches, a depth of 12 feet 7 inches, and a draught of 13 feet 6 inches. Propelled by a 900 indicated horsepower triple expansion steam engine, constructed by Ferguson Brothers, the Oriana was powered to drive a single screw propeller, enabling her to fulfill her role as a tug. Her engine featured three cylinders with diameters of 14, 25½, and 41 inches and a stroke of 27 inches, reflecting typical engineering design of the period. Initially launched on 22 October 1945 and completed by 31 January 1946, the vessel was registered in Glasgow with the UK Official Number 169463 and the code letters GFDP. Managed by the Overseas Towage and Salvage Company Ltd., she served under the auspices of the MoWT, which transitioned into the Ministry of Transport in April 1946. In 1947, her ownership transferred to the Admiralty, and she was renamed Oriana. Her service was brief. On 19 January 1948, while towing the vessel HMMS 366 along with the French tug Vagrant from Chatham Dockyard to Brightlingsea, Essex, Oriana struck a mine in the River Colne Estuary. The explosion caused her to sink suddenly, resulting in the tragic loss of all fifteen crew members, all of whom hailed from the Medway Towns in Kent. The sinking marked a somber event in her relatively short operational history, highlighting the dangers faced by wartime and post-war vessels in mined waters. Oriana’s story exemplifies the wartime and immediate post-war efforts of the UK to build and operate auxiliary vessels, as well as the hazards of mine warfare during that era.

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