The Grand Marina on the Oakland-Alameda Estuary at the end of Grand St. is a full-service Marina with berths for 400 boats. With a view of Coast Guard Island across the water, the Grand Marina also has a secured gatehouse, cable TV and telephone service, heated and tiled restrooms with individual showers and a full service marine center. And with more than a dozen marine businesses located nearby, sailors can will find no shortage of tools and supplies for boat upkeep and maintenance.