SS Tanais, mistakenly referred to as Danae or Danais, was a British-built, Greek-owned cargo ship requisitioned by the German occupation forces in Greece in World War II. On 9 June 1944, Royal Navy submarine HMS Vivid torpedoed it off Heraklion, Crete, with Tanais sinking in just 12 seconds. Almost everyone onboard died, including hundreds of deported Cretan Jews and Christians as well as Italian PoWs who were onboard. Sources differ as to the number of people who perished in the sinking; estimates vary between 425 and 1,000.