Muravyov, Stepan Voinovich (1707–1768) – Russian lieutenant-commander, a participant of the Northern Expedition, and an explorer of the southwestern part of the Kara Sea. In 1721, he graduated from the Preparatory Department of the Naval Academy with the rank of warrant officer. From 1721 to 1732, he served in the galley fleet, inspected the preparation of ship timber and the construction of ships in Staraya Ladoga, commanded the packet boat Pochtalion and the boat Elizaveta. In 1733, he was promoted to the rank of lieutenant and was transferred to the Port of Arkhangelsk. A year later, he was appointed chief of the Great Northern Expedition party. In the summer of 1734, on two koches (Ekspeditsion and Ob), he left Arkhangelsk to study the sea way to the mouth of the Ob River. As a result of two years of work, he mapped the shores of the Vaygach Island, the Yugorsky Strait, a part of the Kara Sea shore, and the western shore of the Yamal Peninsula. At the end of 1735, following a false denunciation, he was arrested and demoted to sailor. In 1740, he was pardoned and dismissed as captain-lieutenant.