Bartolomeu Dias led the Portuguese expedition that first rounded the southern end of Africa from the Atlantic and entered waters east of the Cape, proving that a sea route around Africa toward the Indian Ocean was physically possible.
Dias departed Portugal in 1487 with a small expedition. Like other Portuguese voyages, the fleet used padrões—stone markers—to assert royal claims and record progress along the coast.
Strong winds carried the ships south and east away from direct coastal sight. When the crews turned north they found themselves on the southern African coast east of the cape they had passed without seeing.
The expedition continued eastward before crew resistance and supply limits forced a return. On the westbound passage Dias saw the cape more clearly.
Later tradition says Dias called it the Cape of Storms and King João II renamed it the Cape of Good Hope because of its promise for reaching India. The broad naming tradition is well established, though exact wording in later narratives should not be treated as a verbatim shipboard quotation without a contemporary text.
Dias did not reach India. His achievement was route knowledge that directly informed later planning for Vasco da Gama.
He later sailed with Pedro Álvares Cabral’s fleet in 1500 and died when his ship was lost in a storm in the South Atlantic near the region of the Cape.
For TransitSatellite, Dias’s route should be shown as an exploratory progression with uncertainty in open-ocean legs, not as a surveyed coastline trace.