Affinity Marina features covered and uncovered moorage. The was fully renovated in 2010. It is located on the north shore of Lake Union near Gas Works Park and the Freemont section of Seattle. It was designated a "Clean Marina" in 2012.
Day Island Yacht Club is a members only club devoted to safe, fun, family oriented boating on Puget Sound. The Club provides for the docking and repair of member's boats. Guest moorage in available to members of participating Clubs. Members enjoy many social events and activities such as Club Cruises.