HMS Wellesley was a third-rate ship of the line, carrying 74 guns, launched in 1815 at Bombay Dockyard. Constructed of teak by the East India Company at a cost of £55,147, she was initially intended to be a Black Prince-class vessel, but plans were altered after the capture of HMS Java by USS Constitution, leading her to be built to the lines of the HMS Cornwallis, a Vengeur-class ship. Her dimensions and detailed specifications are not provided, but as a 74-gun ship of her class, she would have been a formidable vessel designed for line-of-battle tactics. Throughout her service, Wellesley played an active role in significant military campaigns. She captured Karachi for the British and participated prominently in the First Opium War, where she was involved in key battles including the capture of Chusan, the Battle of the Bogue, and the assault on Canton and surrounding fortifications. Her actions contributed to Britain’s victory and the acquisition of Hong Kong. Notably, she was the last British ship of the line to be sunk by enemy action—she was severely damaged during a German air raid in 1940, resulting in her sinking. She was raised in 1948, but ultimately was broken up after being beached at Tilbury. In addition to her combat roles, Wellesley served as a flagship in the Mediterranean and later as a guard ship and harbour flagship at Chatham. She also served as a training and reformatory ship, renamed Cornwall when refitted by the London School Ship Society. Her long service life included notable events such as carrying diplomatic missions, engaging in battles, and supporting colonial expansion. Her maritime significance lies in her participation in pivotal conflicts and her distinction as the last Royal Navy ship of the line to be sunk by enemy action, marking the end of an era in naval warfare.

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