In 1553 English explorer Hugh Willoughby with chief pilot Richard Chancellor were sent out with three vessels in search of a passage by London's Company of Merchant Adventurers to New Lands. During the voyage across the Barents Sea, Willoughby thought he saw islands to the north, and islands called Willoughby's Land were shown on maps published by Plancius and Mercator into the 1640s. The vessels were separated by "terrible whirlwinds" in the Norwegian Sea and Willoughby sailed into a bay near the present border between Finland and Russia. His ships with the frozen crews, including Captain Willoughby and his journal, were found by Russian fishermen a year later. Richard Chancellor was able to drop anchor in the White Sea and trudge his way overland to Moscow and Ivan the Terrible's Court, opening trade with Russia and the Company of Merchant Adventurers became the Muscovy Company.