Marine Electrical Repair
Electrical problems on boats rarely fix themselves. Keelmark diagnoses charging, battery, starter, wiring and equipment faults directly at marinas throughout Greater Seattle.
Electrical troubleshooting without the guesswork.
Battery + charging systems
We test batteries under load, verify alternator output, inspect connections and voltage drop, and isolate charging problems before recommending replacement parts.
Starters, wiring + intermittent faults
Loose grounds, corroded terminals, damaged wiring, relays and intermittent power faults can create confusing symptoms. We work through the circuit and find where the failure actually is.
Marine equipment + electronics
We diagnose and install common onboard electrical equipment including bilge systems, pumps, electronics and related 12/24-volt systems.
Keelmark provides mobile service across Seattle, Bellevue, Kirkland, Mercer Island, Renton, Shoreline, Lake Forest Park, Kenmore, Redmond and Sammamish. Send your boat • marina • problem with photos or videos when possible and we’ll confirm availability and the best next step.
Start a service text →Mobile marine service in Greater Seattle.
Boat. Marina. Problem.
Text Keelmark with the basic details. Photos and videos are welcome and help us understand the problem before the appointment.
Text 425-623-0719