Marinus of Tyre

[2][3] Ptolemy said, "Marinus says of the merchant class generally that they are only intent on their business, and have little interest in exploration, and that often through their love of boasting they magnify distances.

His zero meridian ran through the westernmost land known during his time, the Isles of the Blessed, around the location of the present-day Canary or Cape Verde Islands.

Marinus estimated a length of 180,000 stadia for the equator, roughly corresponding[5] to a circumference of the Earth of 33,300 kilometres (20,700 mi), about 17% less than the actual value.

Marinus was of the opinion that the World Ocean was separated into an eastern and a western part by the continents of Europe, Asia and Africa.

He thought that the inhabited world stretched in latitude from Thule (Norway) to Agisymba (around the Tropic of Capricorn) and in longitude from the Isles of the Blessed (around the Canaries) to Sera (China).