The slave ship NS de Belém Monte Alegre arrived with enslaved Africans in Brazil. About 158 people had been taken aboard and approximately 158 arrived.

Vessel: NS de Belém Monte Alegre; flag: Portugal / Brazil; rig: Curveta. People recorded in connection with the voyage: Captain: Guedes, João Vaz Pinheiro; Captain: Fróes, Manoel José; Investor: Fróes, Manoel José. The voyage began at Bahia, place unspecified on 10 June 1789. Principal recorded place where captives were acquired: Costa da Mina, place unspecified (Bight of Benin). Principal recorded disembarkation place: Bahia, place unspecified. Recorded duration of the captives' Atlantic crossing: 62 days. Recorded outcome: Voyage completed as intended.