Since 2014

GWJ Marine Solutions

Marine Diesel Engine Repair Specialists

A trusted provider of specialist marine engineering services across the UK and beyond.

Welcome to GWJ Marine Solutions Ltd

A trusted provider of specialist marine engineering services across the UK and beyond.

Based on the East Coast along the River Humber, we deliver expert maintenance, repair, and overhaul solutions for high and medium-speed diesel engines, marine electrical systems, turbochargers, and more.

With decades of hands-on experience, our team supports a wide range of vessels and industries — from commercial shipping and offshore wind farm support vessels to NHS, marine operations and local fishing fleets. Whether docked, offshore, or in dry dock, we work with precision, reliability, and full compliance with marine safety standards.

Serving major ports across UK and overseas
24/7 emergency support
Supplier of OEM parts

Your vessel. Our expertise. Minimal downtime. Maximum performance.

Who We Are

A Family-owned Marine Engineering Company with a reputation for reliability.

GWJ Marine Solutions Ltd is a trusted marine engineering company based on the UK’s East Coast, specialising in high and medium speed diesel engine repair, marine electrical systems, generator servicing, and turbocharger installation. We offer complete marine engine overhauls, fuel pump and injector calibration, dry dock engine surveys, and preventative maintenance for vessels of all sizes.

What We Do

Comprehensive Marine Repair & Maintenance Services – Onshore and Offshore

Our expertise extends beyond the marine sector, offering land-based generator repair and standby power unit servicing at critical facilities such as hospitals and industrial sites.

Whether it’s a single-component issue or a full system overhaul, we’re equipped to deliver fast, accurate, and cost-effective solutions with minimal disruption to your operations.

Tug Support & Towage Sector Services

We provide specialised engineering services to the towing and tugboat industry, ensuring maximum reliability and minimal downtime.

Diesel Engine Services

We offer expert repair, maintenance, and overhaul of high and medium-speed diesel engines. Whether in dry dock, port, or offshore, we provide tailored support with OEM-level precision.

24/7 Emergency Breakdown Response

Our team offers round-the-clock emergency support , responding rapidly to mechanical or electrical failures onboard. Available across major UK ports and offshore locations.

Engine Overhauls & Rebuilds

We carry out complete engine rebuilds and cylinder head overhauls, restoring performance and extending the service life of critical propulsion and auxiliary engines.

General Mechanical & Deck Equipment Repairs

We maintain and repair all components within the engine room and across deck machinery systems, including pumps, valves, hydraulics, and more...

Spare Parts – New & Reconditioned

GWJ supplies a wide range of genuine and reconditioned spare parts for multiple diesel engine makes and models. We ensure quality, traceability, and fast delivery to reduce your downtime.