On 7 June 1796, Harmonie departed Rochefort to ferry weapons and ammunition to Cap-Français, under Captain Joshua Barney.[Note 1] She then cruised in the Caribbean between Havana and Chesapeake Bay, returning to Cap-Français on 17 October.[4][5] Lieutenant Simon Billiette took command of Harmonie on 19 August 1796; he was promoted to Commander on 22 September.[6][Note 2]
In April 1797, Harmonie was ordered to escort a convoy of merchantmen waiting in Jean-Rabel. She departed Cap Français but on 15 April the ships of the lineHMS Thunderer and HMS Valiant intercepted her. In the ensuing Battle of Jean-Rabel, Harmonie sought refugee in the shallow waters off le Marigot, and the ships of the line departed after firing on her with little effect for several hours [7] or otherwise reported were struggling to keep station because of the wind.[3] On 16 April, however, the ships returned, and the crew of Harmonie, seeing her hopelessly cornered, scuttled her by burning.[8][9] Billiette sustained two wounds at the left leg.[6]
On 20 April, the British ships captured most of the convoy that Harmonie had been tasked to escort.[8] Billiette was court-martialled for the destruction of his frigate, and on 26 April 1798 found innocent of the loss of the ship.[6]
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Demerliac, Alain (2004). La Marine de la Révolution: Nomenclature des Navires Français de 1792 A 1799 (in French). Éditions Ancre. ISBN2-906381-24-1.
Quintin, Danielle; Quintin, Bernard (2003). Dictionnaire des capitaines de Vaisseau de Napoléon (in French). S.P.M. ISBN2-901952-42-9.
Roche, Jean-Michel (2005). Dictionnaire des bâtiments de la flotte de guerre française de Colbert à nos jours. Vol. 1. Group Retozel-Maury Millau. ISBN978-2-9525917-0-6. OCLC165892922. (1671-1870)