Cay Electronics
The Marine and Mobile Systems Engineers
SYSTEM DESIGN
EQUIPMENT SALES
INSTALLATIONS
REPAIRS
MARINE NAVIGATION
COMMUNICATION
AUDIO/VIDEO
COMPUTER NETWORKING
ELECTRICAL SYSTEMS
SYSTEM DESIGN EQUIPMENT SALES INSTALLATIONS REPAIRS MARINE NAVIGATION COMMUNICATION AUDIO/VIDEO COMPUTER NETWORKING ELECTRICAL SYSTEMS
Over 40 years in marine systems.
Based in Portsmouth, RI and trusted in New England and worldwide by top builders, shipyards, captains, and crew, Cay Electronics sets the standard in marine & mobile systems engineering. Delivering efficient, reliable solutions in design, sales, installation, repairs, and more. Excellence you can rely on, every time.
From trailer boats to superyachts, Cay Electronics provides expert guidance to help owners, builders, and yards choose the right systems and equipment—maximizing performance and budget.
With certified technicians and in-house installation standards, Cay Electronics ensures every system is reliable, serviceable, and professionally finished—delivering top-quality results worldwide.
Every great system starts with a plan. Cay Electronics creates clear, detailed system drawings that simplify installations, service, and ownership, while auto-generating bills of materials and wire lists for your project.
Cay Electronics ensures your systems are fully functional and optimized—from firmware updates to sea trials. We calibrate instruments, configure networks, and provide hands-on instruction for seamless operation.
As dealers for top marine manufacturers, Cay Electronics delivers the right equipment and accessories at competitive prices—with worldwide shipping to keep you moving.
Our expert technicians provide onboard repairs and troubleshooting for all marine electronics and electrical systems, with dockside support across New England, the Caribbean, and worldwide.
Equipment Sales & Wholesale Distribution
As trusted dealers for leading marine electronic and electrical manufacturers, Cay Electronics provides top-quality equipment and accessories at competitive prices. Our expert product knowledge ensures you get the right solutions tailored to your needs. With worldwide delivery and same-day shipping from our large inventory, we deliver the gear you need—wherever your journey takes you.