AD 161-Roman scientist Julia makes a sketch of sailboat for long distances which she names Pelagoque (Seafarer), but I will refer to them as caravels. AD 187-Romans discover Cape Verde Islands and name them Insulae Salutis (Islands of Salvation) AD 194-The population of Insulae Salutis reaches 100 000. 24 July 201-Roman navy of 1000 caravels with 45,000 sailors sets sail to west. 10 September 201-453 Roman caravels (others drowned) with 18,833 sailors strand on Cozumel during a hurricane. After that they do not go back to Roman Empire and are forgotten.