HMS St Lawrence was a remarkable 112-gun first-rate ship of the line constructed for the Royal Navy during the War of 1812, serving exclusively on Lake Ontario. Built at the Royal Navy dockyard in Kingston, Upper Canada, her construction was overseen by master shipwrights, with some sources attributing the design to William Bell. The ship was assembled rapidly by nearly 200 shipwrights in under ten months, reflecting the urgency of wartime needs. Physically, St Lawrence measured approximately 2,304 tons burthen, with a gundeck length of 194 feet 2 inches (59.18 meters) and a beam of 52 feet 7 inches (16.03 meters). Unlike typical ships of the line designed for open ocean, she lacked a quarterdeck, poop deck, or forecastle, resembling a spar-deck frigate. This design choice reduced her store capacity, consistent with her expected limited operational scope in freshwater. Her armament was formidable, comprising thirty-two 32-pounder carronades and two 68-pounder carronades on the upper deck, complemented by thirty-six 24-pounder long guns on the middle deck, and twenty-eight 32-pounder long guns, four 24-pounder long guns, and two 68-pounder carronades on the lower deck. Her crew numbered around 700. Launched on 10 September 1814, HMS St Lawrence was commissioned as the flagship of Commodore Sir James Lucas Yeo, with Captain Frederick Hickey serving as Flag Captain. Her arrival effectively ended all naval combat on Lake Ontario, as her presence deterred American forces from engaging. The ship's construction strained regional resources, requiring materials from larger ships like HMS Ajax, HMS Centaur, and HMS Warspite. Shortly after her launch, she was struck by lightning, damaging her mast and causing crew casualties, and was targeted by American plans to destroy her with a floating mine, which was thwarted. After the war, she was decommissioned and sold in 1832. Her hull was repurposed as a storage facility and eventually sank near Kingston. Today, her remains lie in 30 feet of water, designated a National Historic Site of Canada, with only remnants of her keel and ribs remaining as of 2009. The vessel holds historical significance as the only Royal Navy ship of the line built and operated entirely in freshwater, symbolizing British naval efforts on inland waters during the war.

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