What is the circumference of the world?

Drake's exploits as an explorer have become an irrevocable part of the world's subconciousness, particularly in Europe. Numerous legends, myths, stories, and fictional adaptions of his adventures exist to this day. Considered a hero in England, it is said that if England is ever in peril, beating Drake's Drum will cause Drake to return to save the country. This is a variation of the sleeping hero folktale.