Captain Sir John Hamilton, 1st Baronet was a Royal Navy officer of the eighteenth century. He joined as a captain's servant in HMS Rippon in 1740. Hamilton fought in the War of Jenkins' Ear at the Battle of Cartagena de Indias in 1741 and then transferred to HMS Alderney where he participated in the unsuccessful Invasion of Cuba. He was promoted to midshipman in HMS Success in 1742, and was promoted to lieutenant while serving on HMS Tartar in 1747. Having served in a variety of ships as a lieutenant, Hamilton was promoted to commander in 1762. After initially commanding HMS Cormorant he served in HMS Zephyr and HMS Merlin on the Newfoundland Station before being promoted to post captain in 1766.

HMS Lizard was a 28-gun Coventry-class sixth-rate frigate of the Royal Navy, in service from 1757 to 1828. Named after the Lizard, a peninsula in southern Cornwall, she was a broad-beamed and sturdy vessel designed for lengthy periods at sea. Her crewing complement was 200 and, when fully equipped, she was armed with 24 nine-pounder cannons, supported by four three-pounders and twelve 1⁄2-pounder swivel guns. Despite her sturdy build, she was plagued with maintenance problems and had to be repeatedly removed from service for repair.