Power you never have to think about
Everything aboard depends on clean, reliable power. We service shore power, distribution, inverters, and battery banks at the vessel’s slip, and we leave the work documented.
Steadfast Marine Systems services yacht electrical systems dockside at Seattle marinas: shore power connections, distribution panels, inverters and chargers, battery banks, wiring, and monitoring. We serve yachts from 52 to 200 feet at Lake Union, Westlake, Eastlake, Elliott Bay, and Shilshole Bay, working at the vessel’s slip.
Electrical systems we service
Shore power
Inlets, cords, and the transfer equipment between the pedestal and the panel. When shore power trips, browns out, or will not hold, we trace the cause rather than reset and hope.
Distribution panels
AC and DC panels, breakers, and busbars that route power through the vessel. We service, correct, and label them so the panel tells the truth.
Inverters and chargers
The equipment that keeps house loads alive away from the dock. We troubleshoot, repair, and upgrade inverters and chargers, and verify them under real load.
Battery banks
House and start banks: tested, maintained, and replaced when the numbers say so. Capacity is measured, not assumed.
Wiring and troubleshooting
Faults traced to the connection or conductor that caused them. Marine wiring fails in predictable places, and we know where to look.
Monitoring and controls
Battery monitors, system controls, and alarms that tell you the truth about the vessel’s power. We service what exists and upgrade what should.
- Faults are traced with meters and the vessel’s drawings, not by swapping parts until the symptom moves.
- Work closes with a written record of readings, corrections, and any circuit changes, for the vessel’s file.
- Shutdowns are scheduled with the captain or engineer so ship’s operations continue around the work.
- Aboard crewed vessels we protect finished surfaces, keep the work area contained, and treat everything we see as private.
Measured. Documented. Stood behind.
Assess at the slip
We test at the vessel’s slip: voltages, loads, and connections, measured and recorded. You get a finding and a plan before repairs begin.
Service and verify
The repair is made and then proven under load, not just at rest. A circuit that only behaves with nothing running is not fixed.
Document and stand behind it
You receive a written record of what was found, changed, and verified. If it does not hold, we come back.
Questions, answered
- Shore power keeps tripping when we connect. Can you find the cause at the slip?
- Yes, and the slip is the right place to find it, since the fault involves the pedestal, the cord, and the vessel together. We test each in turn dockside and trace the trip to its source. Marinas covered include Lake Union, Westlake, Eastlake, Elliott Bay, and Shilshole Bay.
- Can you replace or upgrade a battery bank?
- Yes. We test the existing bank first, since a charging fault can look exactly like tired batteries. If replacement is the answer, we size and install the bank and verify charging across all sources.
- Do you work on large, complex vessels?
- Yes. We service yachts from 52 to 200 feet. On larger vessels that means full distribution systems, multiple shore power services, and coordination with the captain or engineer; on smaller vessels it is often a single panel and a pair of banks. The approach is the same either way: diagnose methodically, document clearly.
- Do you service inverters and chargers?
- Yes. We troubleshoot, repair, and upgrade inverters and chargers, and verify them under real load before leaving. Monitoring is checked on the same visit so the readouts match reality.
Power, accounted for
Tell us the vessel, the marina, and the symptom. We test at the slip, document what we find, and stand behind the repair.
Other services
A yacht should hold its temperature without being heard.
View →Provisions, a proper freezer, ice on demand, wine held at temperature: refrigeration is the quiet backbone of life aboard.
View →A failed chiller, a warming freezer, a dark panel: none of them keep business hours.
View →Dockside at Lake Union, Westlake, Eastlake, Elliott Bay, and Shilshole Bay.
View →