Between December 13 and December 16, Norris sailed the waters northeast of Bouvet Island, where he discovered another island. It was much smaller, and the sea around it was much rougher. Three miles southeast of the newly discovered island, he found three rocks. In his log, he named the newly found island Thompson Island, and the rocks "chimneys", because of their form. He also marked the position of his discoveries on a map. Unfortunately, the positions of the islands on the map did not match those written down in the log. In 1853 the discoveries of Thompson Island, Bouvet Island, and the Chimneys showed up on an official map of the British admiralty. 