In November 1803, the French privateer Harmonie slipped into the harbor at Le Marin, Martinique, trailing a prize she had recently taken. Captain Thomas Graves, commanding a 74-gun third-rate ship of the line, spotted an opportunity. He spent two days beating around Diamond Rock to get into position, then launched a coordinated night assault: 60 seamen in four boats to cut out the Harmonie, and 60 marines in four more to storm Fort Dunkirk on the harbor's starboard side. The two parties set out at 11 p.m. By 3 a.m., both attacks had succeeded. The marines captured the fort -- guarded by just 15 men -- spiked six 24-pounder and three 18-pounder guns, and blew up the magazine. The cutting-out party met stiffer resistance. Harmonie's crew of 66 fought back; two were killed, fourteen wounded, and about twelve escaped overboard into the dark water. British casualties were light but real: one man killed and five wounded across two ships.

What happened next was unusual even by the standards of the era. The citizens of Grenada purchased the captured Harmonie and donated her to the Royal Navy on January 27, 1804. It was both a patriotic gesture and a practical one -- French privateers had been terrorizing Caribbean trade routes, and the people of Grenada were investing in their own protection. The Navy commissioned her as HMS Grenada, appointed Lieutenant John Barker to command, and assigned her to the Leeward Islands station. They also converted her from a schooner to a brig, a modification that made her more versatile for the patrol work ahead. Lloyd's Patriotic Fund recognized the original cutting-out operation with honor swords -- a hundred-pound sword for Captain Ferris and fifty-pound swords for four lieutenants. One marine lieutenant had died before the award could be presented; his family requested the cash value instead.

Under Barker's command, Grenada became one of the most active privateer hunters in the Leeward Islands. Her record reads like a catalog of Caribbean sea chases: the Deux Amis in December 1804, caught after throwing her guns overboard in a desperate attempt to flee; the Intrepid in March 1805, a 66-man vessel that surrendered without a fight after a two-hour pursuit off Union Island; the Petite Aricere in July, four guns and 35 men. In November 1806 alone, Grenada captured three privateers in rapid succession off Tobago and Carriacou -- the Desiree, the Marianne, and the Tigre -- each after hours-long chases through Caribbean waters. Barker was particularly pleased to catch the Marianne, a fast sailer that had been damaging British trade on previous cruises. Prize money for some of these captures was not paid until April 1815 -- a decade after the fact.

Grenada's only true ship-to-ship combat came on the morning of February 15, 1806, five or six leagues west of Pearl Rock, Martinique. The enemy was the Princess Murat, a French letter-of-marque schooner whose guns were arranged to fire on either beam, giving her a broadside roughly 30 percent heavier than Grenada's. The intermittent engagement played out over shifting winds, Grenada firing her first shot at 7 a.m. When the Princess Murat finally struck her colors, three of her crew were dead and seven wounded. Grenada's casualties were two: James Atkins, her master, severely wounded, and a boy -- unnamed in the records -- who died some hours after the action. Both vessels were wrecked in their rigging; the next day, Princess Murat's masts fell overboard entirely. It was a hard-won victory, and the unnamed boy's death is a reminder that these ships were crewed not just by seasoned sailors but by the young and the vulnerable.

Grenada continued her service through 1808, recapturing merchant vessels and seizing more privateers off Trinidad under new commanders. Her final act of significance was participating in the British capture of Guadeloupe in January and February 1810, a campaign for which the Admiralty would award the Naval General Service Medal to surviving participants -- though not until 1847, nearly four decades later. On December 31, 1810, HMS Grenada was sold for breaking up. In her six years of commissioned service, she had captured nine French privateers, recaptured several British merchant vessels, and fought the only single-ship action of her career to a decisive outcome. She was, in the end, exactly what the citizens of Grenada had hoped she would be: a protector of Caribbean trade, bought with civilian money and crewed by men whose names -- Barker, Atkins, Ferris, and one unnamed boy -- are now footnotes in a war that reshaped the world.