From September 1796 Broughton charted the east coast of Honshu and Hokkaidō before wintering at Macau where he purchased a small schooner to assist the "Providence." Next year he returned to Japan where the "Providence" was wrecked on what was to become known as Providence Reef, now Yabiji (八重干瀬), at Miyako Island. The schooner saved the crew of the wrecked ship and they continued north along the east coast of Honshu. Passing Hokkaido, the expedition sailed north into the Gulf of Tartary along the west coast of Sakhalin. Finding extensive shallows at the north end of the gulf it was falsely concluded that Sakhalin was part of the mainland (a common mistake). Broughton turned south along the coast of Korea and then headed home by way of Trincomalee, Ceylon, where the crew was paid off and he was court-martialled for the loss of his ship. Having been acquitted, he reached England in February 1799 and shortly after began to write his book, ""A Voyage of Discovery to the North Pacific Ocean; in which the coast of Asia, from the latitude of 35° north to the latitude of 52° north, the island of Insu (commonly known under the name of Jesso), the north, south and east coasts of Japan, the Lieuchieux and adjacent islands, as well as the coast of Corea, have been examined and surveyed, Performed in His Majesty's Sloop Providence and her tender, in the years 1795, 1796, 1797, 1798"". It was published in 1804.