1936 Portuguese naval revolt

The 1936 naval revolt (Portuguese: Revolta dos Marinheiros de 1936, lit. '1936 Sailors' Revolt') or Tagus boats mutiny (Motim dos Barcos do Tejo) was a mutiny in Portugal that occurred on 8 September 1936 aboard the aviso Afonso de Albuquerque and destroyer Dão. It was organized by the Revolutionary Organization of the Fleet (Organização Revolucionária da Armada, ORA), a left-wing group with links to the Portuguese Communist Party.

Source: Wikipedia — 1936 Portuguese naval revolt (CC BY-SA 4.0)