Did the Chinese Circumnavigate the World in 1421?
Why Menzies’ 1421 Won’t Sail
Captain P. J. Rivers, FRGS FNI MRIN ACII ACI Arb, Master Mariner
“According to the author, his main thrust is every great European explorer, from Columbus in 1492 to Captain Cook in 1768, sailed with charts showing their destinations. This prior knowledge supposedly came from a single source - a Portuguese World Map of 1428 (p.107), solely mentioned by the historian Galvano who died in 1557.”
...“This entertaining amateur ‘detective’ novel, masquerading as revisionist history, may well prove to be the Piltdown Man of literature and should only be classified as fiction”. Paper