Marine Electrical Diagnostics & Repair
Charging systems, shore power, AC/DC distribution, NMEA 2000 networks, corrosion faults, and critical safety circuits.
ABYC Certified Marine Electrician
Certified in marine electrical systems and industry best practices for troubleshooting, repair, and installation.
Common Problems
Battery Not Charging
You run the engine but the batteries never come up, or they charge at the dock and not underway. Could be the alternator, the regulator, the charger, or the batteries themselves giving up.
Batteries Dead by Morning
Everything's off, but you wake up to a flat bank. Something aboard is drawing current while you sleep, and it's usually not what you'd guess.
Engine Won't Crank
You turn the key and get a click, a slow groan, or nothing. Often it isn't the starter or the battery at all, but the connections in between.
Shore Power Breaker Trips
The pedestal or your main breaker keeps kicking off, sometimes right away, sometimes hours later. It can be the dock, the cord, or something on the boat.
Hot or Melted Shore Power Plug
The plug or inlet is discolored, warm to the touch, or starting to melt. This one doesn't wait, a connection like that is on its way to a fire.
Lights Flicker, Electronics Reboot
Lights dim, the chartplotter resets, instruments blink out for no clear reason. The kind of fault that vanishes the moment you go looking for it.
NMEA 2000 Device Dropouts
A display goes blank or an instrument disappears from the network, then comes back on its own. Usually the backbone wiring or a termination, not the device.
Zincs Wasting Fast
Your anodes are gone in a season, or your running gear is starting to pit. Could be normal galvanic activity, could be stray current, and it matters which.
Don't Know What You Have?
You bought the boat with wiring you didn't install and no idea what's back there. I map it, document it, and tell you in writing what's aboard and what needs attention.
When the Problem Isn’t Obvious
Marine electrical problems often have more than one possible cause. Replacing the first suspicious component can waste time and money without correcting the underlying fault.
Sure Shot Marine uses systematic testing and electrical measurements to identify what is actually failing—whether the problem is in the equipment, wiring, connections, protection, configuration, or the power feeding it.
- Find the root cause before replacing expensive equipment.
- Identify unsafe conditions before they become larger failures.
- Receive a clear explanation of what was found and what should happen next.
Not sure where to start? Call or text and describe what the boat is doing. You don’t need to diagnose it first.