The Marine Systems Engineers

system design - equipment sales - installations - repairs

Marine Navigation, Communication, Audio/Video, Computer Networking & Electrical Systems


Providing cutting edge solutions to the recreational and professional mariner for over 30 years

At Cay Electronics we take a unique approach to marine electrical and electronic engineering. We call it the total yacht concept

Whether you come to us for a repair or a refit, or your boat is still under construction, we consider the impact of our work on all the components of your boat. The result is an integrated system that is more than the sum of its parts.

The total yacht concept also means being where you need us. We started the business in Tortola, British Virgin Islands in 1982. In 1990 we added a branch of Cay Electronics in Portsmouth, Rhode Island to extend our service throughout New England and the Atlantic Seaboard, as well the Caribbean. Today we have more than twenty-five dedicated engineers, technicians and customer service specialists committed to providing expert consultation and worldwide service, including installation, repair and product sales.

We invite to you to visit us at either of our locations or via the Internet. We'll be happy to talk to you about upgrading your boat's current systems or designing innovative systems from keel to mast.




Melville Marine District
Portsmouth, Rhode Island, USA

(401) 683 3520


Nanny Cay Marine Center
Tortola, British Virgin Islands

(284) 494-2400


Our Services


For the boat owner, boat builder or boat yard Cay Electronics offers expert and up to date advice on selecting the best systems and equipment to match your needs and maximize your budget. From daysailer to superyacht, power or sail, let our knowledge and experience guide you.



Our experienced installation technicians undergo regular training to NMEA and ABYC standards and attend manufacturers' training sessions. Cay Electronics created and maintains its own in-house book of installation standards to ensure that every installation is top quality, professional looking, reliable and easy to service. Worldwide service available.

system design

Like the vessel itself, every great electronic or electrical system must start with a plan. Cay Electronics is a pioneer in the development of system drawings that provide detailed wiring information in a format easy to read by the installer, owner or service technician. Our drawings can auto-generate a bill of materials and wire list for your project.


From updating the equipment firmware to configuring display screens and wired or wireless networks, setting passwords, loading charts, Cay Electronics will ensure your systems are correctly setup and fully functional. We will accompany you on sea trial to calibrate instruments, autopilot and radar, and provide instruction on equipment operation.

equipment supply

As dealers for all the major marine electronic and electrical manufacturers, Cay Electronics can fulfill your equipment needs at competitive prices. Our product knowledge ensures you receive the correct accessories to go with your equipment purchase. We regularly ship orders worldwide.



Our mobile service technicians provide on board troubleshooting and repair for all makes of electronic and electrical equipment. Dockside service available throughout New England, the Virgin Islands and providing support to our clients worldwide.


Having a yacht is a reason for being more cheerful than most
— Kurt Vonnegut


How can we help you?

Use the form below to contact us. Please be as detailed as possible. Include the product or service you are seeking. You may also email or call us to make an appointment or to purchase product.

Name *
Purchase or Repair? *