In 1841, US Navy Lieutenant Charles Wilkes visited the island while surveying the Pacific Northwest. Lt. Wilkes named the island after Commodore William Bainbridge, commander of the frigate USS Constitution in the War of 1812. Settlers originally used Bainbridge Island as a center for the logging and shipbuilding industries. The island was known for huge and accessible cedars, which were especially in demand for ships' masts. The original county seat of Kitsap County was at Port Madison on the island's north end.
