A cross-section of the mockup of Brazilian slave ship Vigilante at the Barra Fort Naval Museum, in Salvador, Bahia. Involved in the illegal slave trade, the ship was captured by the British Navy in the African coast in 1822. A cross-section of the mockup of Brazilian slave ship Vigilante at the Barra Fort Naval Museum, in Salvador, Bahia. Involved in the illegal slave trade, the ship was captured by the British Navy in the African coast in 1822.