SS Príncipe Perfeito was a passenger ship built in 1961 by Swan Hunter on the River Tyne. She first entered service for the , often abbreviated as CNN. The first voyage of Príncipe Perfeito, which began in Lisbon to Africa with calls at nine different ports and then ended at Beira Harbour, was a run that would become her usual voyage. On July 6, 1964, the Príncipe Perfeito transported the president of the Portuguese Republic, Americo Tomas in an official trip to Mozambique.