Stuart Island State Park is a 433-acre marine camping park in Washington’s state park system on and around Stuart Island in the San Juan archipelago. Named for Frederick D. Stuart, clerk to explorer Charles Wilkes, it is shaped by both land and sea. With 33,030 feet of saltwater shoreline, moorage at Reid Harbor and Prevost Harbor, and 3.5 miles of trails, it serves boaters and campers alike. Recreation centers on the marine environment, including boating, scuba diving, fishing, crabbing, hiking, and camping. As part of the Cascadia Marine Trail, it also reserves some of its 18 primitive campsites for visitors arriving by non-motorized boat.