Japan to UK by sea

Answer 1

If "Ice Breakers" could make the journey, the best and quickest way by sea would be north going between Alaska and Russia thru the Bering Sea and skirting the coastline along the continent of Eurasia thru the Arctic Ocean to England. Otherwise, it's the route taken by the Russian Battleships under the command of Admiral Rozhestvensky in 1904 (although this is in reverse order): Southwest down the Pacific Ocean thru Singapore into the Indian Ocean continuing southwestward towards the island of Madagascar along the east African coast, rounding the southern tip of Africa (Cape of Good Hope), entering the Atlantic and moving northward along the continent of the west African coast line. OR taking a short cut, also taken by some of Rozhestvensky's battleships in 1904; instead of heading towards Madagascar, turning north into the Red Sea and going thru the Suez Canal, entering the Mediterranian Sea, then exiting thru the straites of Gibralter into the Atlantic Ocean.