Котельный
The island was officially discovered by a Russian merchant and hunter, Ivan Lyakhov, with the merchant Protod’yakonov, in 1773. In 1770, Ivan Lyakhov noticed reindeer tracks heading seaward across the sea ice. In 1773, he and Protod’yakonov discovered the Lyakhovsky Islands by boat using the bearing of these tracks. Continuing from the Lyakhovsky Islands, they discovered Kotelny Island and named it "Kettle Island" after a copper kettle, which they found while exploring it. The person(s), who visited Kotelny Island and left the copper kettle, is unknown. Formerly this island had been known as "Thaddeus Island" or "Thaddeus Islands" in some maps.