Primrose encountered the Veloz Passagera off West Africa, in the day, near Prince's Island on 7 September 1830. A severe engagement ensued and the British successfully captured the hostile vessel. Forty-three slavers out of 150 were killed in action and another twenty were wounded while the Royal Marines and sailors lost three killed and twelve wounded. The engagement was one of the few fought during several decades of anti-slavery operations off the African coast and the most significant in terms of casualties and the strength of the opposing forces. Veloz Passagera had a cargo of 555 slaves aboard her and her surviving crew was charged with piracy in England. On 6 Jun 1831 account of proceeds of the bounty granted for 551 slaves and a moiety of the hull, etcetera, were deposited in the R