Cause of death: shipwreck
Bartolomeu Dias (c. 1450 – 29 May 1500) was a Portuguese mariner and explorer. In 1488, he became the first European navigator to round the southern tip of Africa and to demonstrate that the most effective southward route for ships lies in the open ocean, well to the west of the African coast. His discoveries effectively established the sea route between Europe and Asia.
Source : Wikipedia