Westsound/WSX Seaplane BaseWestsound Seaplane Base is a seaplane base located adjacent to West Sound on Orcas Island in San Juan County, Washington, United States. It is owned by the Westsound Marina.FacilitiesWestsound Seaplane Base has two seaplane landing areas: 10/28 is 4,000 by 500 feet and 18/36 is 5,000 by 500 feet.