Andreas Cove Yacht Club is located in the heart of The Delta on the San Joaquin River at Owl Harbor Marina in Sevenmile Slough . The Club has a membership of approximately 30 yachts most of which are sailboats, but we encourage an active power contingent. ACYC was started 25 years ago by a small nucleus of avid sailors. ACYC members keep their boats throughout The Delta, at Andreas Cove, Bethel Island, Brickyard Cove, Bruno''s Island, Owl Harbor and Rainbow Marina. Cruises take place all during the year in The Delta and San Francisco Bay waters and beyond.