Marine Engineering in North Wales

Above the Brine provides professional marine engineering services for leisure and commercial vessels across North Wales, Anglesey and the North West. From engine diagnostics to complex mechanical and electrical repairs, our experienced engineers deliver safe, compliant and reliable solutions for boats operating in tidal, coastal and inland waters.

Based at Victoria Dock, Caernarfon, we operate a fully equipped boatyard with lifting facilities, allowing us to diagnose and resolve problems efficiently without unnecessary subcontracting or delays.

Engine Diagnostics, Service, Repair & Installation

We provide specialist support across all major marine propulsion platforms including MerCruiser, Volvo Penta, Yanmar, Beta Marine, Tohatsu, Suzuki and Yamaha systems.

Our engineering services include:

• Engine problem diagnosis, fault finding and repair
• Routine servicing and preventative maintenance
• Installation of certified inboard, outboard and auxiliary engines
• Winterisation and de-winterisation
• Pre-purchase inspections on second-hand engines
• Diesel and petrol inboards
• Modern and legacy outboards
• Personal watercraft and jet skis
• Stern drives and sail drives
• Gearboxes and marine transmissions
• Propeller and prop-shaft repairs
• Shaft, strut and transmission alignment, repair and rebuilds
• PSS dripless shaft seal installation, anode and cutless bearing replacement
• Servicing of oil coolers and heat exchangers
• Exhaust system replacement and modification
• Bow thruster installation and fault diagnosis

If you require diagnostics or engineering assistance, complete our Engineering Enquiry Form.

Click Request Engineering Support to begin.

Mechanical & Electrical Systems Engineering

Our engineers work across all onboard mechanical and electrical systems including battery and charging systems, electrical fault tracing, steering and control systems, cooling circuits, exhaust systems and auxiliary machinery.

All work is carried out to manufacturer specifications and recognised marine safety standards.

Why Choose Above the Brine

We combine real-world experience, manufacturer training and on-site facilities to provide dependable marine engineering in demanding operating environments.

Our team works daily on both modern and legacy engines including Beta Marine Inboards and Tohatsu Outboards, as well as approved third-party systems.

How Our Engineering Service Works

All marine engineering with Above the Brine follows a clear, professional process designed to give you certainty on scope, cost and outcome.

1. Engineering Enquiry
Submit your details using our Engineering Enquiry Form or simply give us a call.  Our engineering team reviews your boat, symptoms and objectives so we understand the job before we quote.

2. Fixed-Scope Estimate
We provide a written estimate covering the required works, parts and labour. Where diagnostics are required, these are clearly defined and priced up-front, no open-ended investigations.

3. Booking & Deposit
Once approved, we secure your slot in the yard with a deposit and schedule the work around tides, lifting and engineering capacity.

4. Professional Execution
Your boat is worked on by our in-house marine engineers using proper job control, parts tracking and quality checks.

5. Completion & Handover
You receive a full breakdown of work completed, parts fitted and any findings for future maintenance, no surprises.

Frequently Asked Questions

Do you work on boats not kept at your yard?

Yes. We support vessels across North Wales and the North West and can arrange yard access or off-site assessments where appropriate.

Can you diagnose intermittent faults?

Yes. Electrical and mechanical fault-finding is a core part of our engineering service.

Do you provide written reports?

Yes. Where required, we provide written diagnostic summaries and technical recommendations.

Related Services

Explore Maintenance, Refit & Repair, Yard Facilities, and Aftersales to see how we support you beyond engineering.