The slave ship S Marcos departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Brazil.

Vessel: S Marcos; flag: Portugal / Brazil; rig: Bergantim. People recorded in connection with the voyage: Investor: Almeida, Vitorino da Cruz e; Captain: Vítor, José Luís. The voyage began at Pernambuco, place unspecified on 17 June 1815. Principal recorded place where captives were acquired: Mozambique (East Africa and Indian Ocean islands). Principal recorded disembarkation place: Pernambuco, place unspecified. Recorded outcome: Left home port, no further record.