Medium-sized marina with multiple piers, ample striped surface parking filled with vehicles, and adjacent buildings on a bay shoreline.
Nestled on Daingerfield Island at the mouth of Four Mile Run near Old Town Alexandria, Washington Sailing Marina offers slips for over 600 Potomac boaters along with a sailing school, collegiate teams, and clubs. It features a spacious deck with views of the D.C. skyline and easy access to the Mount Vernon Bike Trail.
Marinas typically need to separate slip holder parking from day-visitor parking, trailer areas, launch ramps, and secure dock access points. Modern facilities use barrier gate systems to enforce these zones automatically — allowing permitted vehicles through via transponder or keycard while logging all access events.
