In business since 1982. The Marine Systems Engineers. Call Cay Electronics for design, sales, installations and repair of marine systems, including navigation, communications, computer networking and software, battery systems and electrical distribution. With locations in Portsmouth, RI, and the British Virgin Islands, our expert staff is available for all your installation and repair needs. New boat packages designed and installed and used boat refits undertaken. Newport dockside service available. A Raymarine Premier dealer. NMEA and ABYC certified technicians.