Serving boaters since 1983, Swantown Marina maintains both permanent and guest moorage in a park-like setting. Plans are underway for development of a marina village business district.Located on the west side of the Port Peninsula just north of the City of Olympia's Percival Landing, the Port Plaza guest dock provides approximately 500 lineal feet of moorage for limited day use and overnight stays. View Port Plaza Rate Schedule. Reservations are accepted with a $5 fee plus first night's moorage. Fees are non-refundable. Potable water is available, but shore power is not available. Moorage is limited to 7 days in a 30-day period.