Protect your boat from galvanic corrosion in Portsmouth — professional galvanic isolator installation. Free assessment, written quote, task to boat benchmarks.
Portsmouth sits within Hampshire, and portsmouth's rich maritime heritage means there's no shortage of yachts needing calibre electrical job. We serve Gunwharf Quays, Port Solent, Haslar Marina and surrounding berths with skilled marine wiring expertise — from emergency problem finding to whole setup overhauls. It shapes the kind of job we do here every week.
Working on craft across Portsmouth day in, day out — when you connect to shore power, your vessel becomes part of an electrical circuit with each other craft on the pontoon. A galvanic isolator blocks destructive galvanic currents while maintaining essential safety earthing. For Portsmouth-based boats — particularly those at Gunwharf Quays Marina — this is core job. That's how we approach every job in Portsmouth.
Galvanic isolators are cheap insurance against corrosion damage — we recommend and fit them as spec on long-stay shore power installs.
We know which marinas have lift-out facilities, which require tender access, and which are walk-on — and plan callouts around it.
Mismatched polarity, poor earthing and missing RCDs are frequent on older boats — we test, document and put right on every visit.
The fleet ranges from classic wooden yachts to modern production cruisers — we've worked on most of them.
If a job requires more time or extra parts, we say so up front — never after the fact.
For vessel owners near Gunwharf Quays Marina and Port Solent, long-term clients move boats up the coast and stay with us — that continuity matters for support. Quotes spell out parts, labour and assumptions — what's in scope, what's optional, and what would be a separate visit. We task alongside other trades regularly — engineers, riggers, painters — so multi-trade refits run smoothly.
Right throughout Portsmouth's berths, dissimilar metals in contact with seawater create galvanic cells. Shore power earth connections accelerate this, eating through your hull fittings, propeller, and anodes faster. Mismatched polarity, poor earthing and missing RCDs are frequent on older vessels — we test, document and put right on each visit. On the Gunwharf Quays Marina pontoons in particular, that's how we handle it. That detail matters more than it sounds, particularly for boats kept around Gunwharf Quays Marina.
For Portsmouth skippers, after-care matters — we stay reachable for follow-up questions and small adjustments. In Hampshire, older yachts commonly need shore-power setups brought up to current benchmarks — we handle the certification too. Working in Portsmouth means knowing the local marina contacts — useful for arranging access, lift-outs and contractor coordination.
Near Gunwharf Quays Marina, a galvanic isolator blocks low-voltage galvanic currents while allowing safety earth current to flow in a issue condition. Simple, effective corrosion protection. Galvanic isolators are cheap insurance against corrosion damage — we recommend and fit them as standard on long-stay shore power installs. It's a small thing that adds up across the life of a vessel berthed in Portsmouth.
Boats kept at Gunwharf Quays Marina face the usual coastal challenges — UV, salt and the occasional knock — we build for it. Near Portsmouth, we frequently see legacy installs from multiple owners stacked on top of each other — bringing them back to a coherent design is regular task. Local insurers in Hampshire expect documented work — we provide the paperwork as standard.
For yachts kept in Portsmouth, we fit galvanic isolators inline with your shore power earth conductor. Correct fit-out is critical — an incorrectly fitted isolator can compromise safety. Reverse-polarity protection on European-sourced shore power is essential — we test, document and certify on every fit. Owners around Gunwharf Quays Marina have come to expect that as the baseline. Skippers in Hampshire tend to notice the difference within a season or two.
In Hampshire we see a lot of older fibreglass cruisers being upgraded — this kind of task is bread and butter for us. On older craft around Portsmouth, panel real estate is tight — we plan layouts to fit cleanly without compromising serviceability. Plenty of vessels berthed at Gunwharf Quays Marina are kept on the water year-round, so winter resilience is part of the brief.
When we attend vessels in Portsmouth, after fit-out, we test the isolator to confirm it's blocking galvanic current while maintaining a safe earth path. We also check your anodes and bonding system. Crossover switching between shore and inverter sources requires proper interlock — we plan and install with safety the priority. That approach has paid off on dozens of vessels across Portsmouth.
Many Portsmouth boats are used for cross-Channel passages — setups need to be dependable, not just functional. Vessels in Hampshire regularly see year-round use, so durability matters more than show — we build for that. On yachts moored at Gunwharf Quays Marina, we frequently see issues caused by long-term shore power — we check for it on each visit.
Absolutely — Across the craft we job on in Hampshire, our typical recommendation depends on usage patterns, budget, and how long you intend to keep the vessel. We follow current ISO and BSS boat benchmarks, with full continuity and insulation testing on completion. We cover all of Portsmouth for this kind of task — just give us a call to discuss specifics. Drop us a line with the boat make, model, and current setup and we'll come back with a clear answer.
Pricing is straightforward: free assessment in Portsmouth, written itemised quote, then task proceeds only with your sign-off. Nothing is added without your agreement. Get in touch via the contact form with the craft's basics and we'll book a visit at your convenience in Portsmouth.
Definitely — All over the vessels we work on in Hampshire, our typical recommendation depends on usage patterns, budget, and how long you intend to keep the craft. Where AC and DC systems share space, we maintain proper separation and clearly distinct cable colours. Owners moored anywhere in Portsmouth or the surrounding Hampshire coast can expect the same response. Send a couple of photos of the existing installation and we'll come back with options and pricing.
The simple answer is yes — Every job we take on in Portsmouth is approached the same way: assess properly, quote in writing, do the task to boat benchmarks, and document what's been done. Fuse coordination, conductor sizing and terminal ratings are all checked against the load they'll actually see. It's part of our standing coverage across Portsmouth — no premium for being slightly off the main marinas. Drop us a line with the yacht make, model, and current setup and we'll come back with a clear answer.
Yes — Every job we take on in Portsmouth is approached the same way: assess properly, quote in writing, do the job to marine specifications, and document what's been done. Yacht-grade tinned cable, properly sized fuses, and labelled terminations are level on every job. All over the Hampshire coast, this is one of our more common enquiries. Best route is a quick call — five minutes on the phone usually clarifies the right next step.
Most Portsmouth visits booked within the week — same-day for genuine emergencies.
Whether it's a five-minute fault diagnosis or a full harbour mixed-aware refit, Portsmouth boats get the same considered approach we bring to every job on the South Coast.