The West Africa Squadron, also known as the Preventive Squadron, was a squadron of the Royal Navy whose goal was to suppress the Atlantic slave trade by patrolling the coast of West Africa. Formed in
HMS Black Joke and prizes (clockwise from top left) Providentia, Vengador, Presidenta, Marianna, El Almirante, and El Hassey
HM Brig Black Joke engaging the Spanish slave brig Maranerito in the Bay of Biafra, 26 April 1831, by George Philip Reinagle