HMS Mackerel was a Royal Navy Ballahoo-class schooner of four 12-pounder carronades and a crew of 20. The prime contractor for the vessel was Goodrich & Co., in Bermuda, and she was launched in 1804. Given that she served entirely during the Napoleonic Wars and the War of 1812, she had an unusually peaceful and uneventful career, primarily on the Newfoundland Station, before she was sold in 1815.