
Electrical problems are the leading cause of boat failures on the water. SMS Mobile Marine Service provides mobile marine electrical diagnosis and repair throughout Sarasota — at your dock, slip, or marina. We find the root cause of electrical failures, fix them with clean marine-grade work.

Our technicians identify root causes — not just symptoms — and repair with marine-grade materials rated for the saltwater environment.

Tell us the symptoms: what fails, when it fails, how long it has been happening, and any recent electrical work or changes. The more specific you can be, the better prepared we arrive.

We do not guess and replace parts hoping to get lucky. We test the circuit, trace the fault, and identify what is actually causing the problem before recommending a repair.

Once we have identified the issue, we explain what caused it, what fixing it involves, and what it costs. For upgrades, we advise on what will actually improve reliability versus what is optional.

After repairs we test the circuit under normal operating conditions before leaving. Repairs use marine-rated wire, heat-shrink connectors, and properly sized fusing. No automotive parts on a boat.
Replacing a fuse that keeps blowing without finding why it blows is not a repair — it is a delay. We trace faults to their source and fix the underlying problem.
Automotive electrical materials fail in the marine environment. We use tinned marine wire, marine-rated connectors, proper heat shrink, and UV-resistant materials. Repairs that hold up at sea.
A bad ground, an overloaded circuit, or a corroded connection is not just a nuisance — it is a fire risk. We take electrical work seriously and will not leave an unsafe condition unaddressed.
Some electrical repairs require hauling, panel removal, or extensive dismantling that is not practical dockside. If that is the case, we tell you before we start.
If your electrical project connects to a GPS, fish finder, VHF, or audio upgrade, we handle both the wiring and the electronics installation in the same visit. See our Marine Electronics page for full scope.
Every repair is performed by licensed technicians. Our work is covered, and we stand behind what we do. If something is not right, we come back and make it right.
Please reach us at smsmarine@hotmail.com if you cannot find an answer to your question.
Yes. Parasitic drain testing is one of the most common electrical calls we handle. We use a multimeter and systematic circuit isolation to identify which component or circuit is drawing current when the boat is at rest.
A fuse that repeatedly blows is telling you there is a short circuit, an overloaded circuit, or a failing component drawing too much current. Replacing it without diagnosing why it blows is just setting up the next failure — and a potential fire risk. We find and fix the root cause.
Intermittent faults are harder to chase than constant failures, but they are traceable. We use voltage drop testing, load testing, and connector inspection to identify high-resistance connections and loose terminals that behave well at rest but fail under vibration or load.
Yes. Wiring cleanups, fuse block upgrades, and bus bar installations are projects we handle regularly. If your boat has mystery wiring from previous owners or add-on accessories installed without proper fusing, we can assess and correct it.
Significantly. Marine environments involve constant moisture, salt air corrosion, vibration, and submersion risk. Automotive wire and connectors corrode rapidly in a marine environment. We use tinned marine-grade wire, heat-shrink adhesive connectors, and properly rated fusing for everything we install.
Boat make, model, and engine brand. Location (marina and slip). A description of what is failing — what the symptom is, when it happens, and anything that has changed recently (new equipment installed, recent work done, trips in rough water). Photos of your electrical panel or problem areas are helpful.
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SMS Mobile Marine Service
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