Lock Gate Inspection, Repair & Refurbishment Specialists
The UK’s Lock Gate Inspection, Repair & Refurbishment Specialists
Keeping Ports, Harbours and Waterways Lock Gate Moving for 50 Years
Kaymac Marine & Civil Engineering is one of the UK’s leading specialists in the inspection, refurbishment, repair and replacement of lock gate.
Combining commercial diving, structural engineering, mechanical engineering and bespoke temporary works, we deliver complete lock gate solutions for ports, harbours, marinas, canals and flood defence assets throughout the UK.
Specialists in the inspection, repair and refurbishment of lock gates, sluice gates, sector gates, mitre gates, caisson gates, penstocks and other hydraulic steel structures across the UK.
Our Hydraulic Steel Structures expertise lies within:
✓ Lock Gates
✓ Sluice Gates
✓ Penstocks
✓ Stoplogs
✓ Sector Gates
✓ Mitre Gates
✓ Caisson Gates
✓ Flood Gates
Our in-house Lock Gate capabilities
✓ Commercial Diving
✓ Marine Civil Engineering
✓ Structural Engineering
✓ Mechanical Engineering
✓ Confined Space Teams
✓ Temporary Works Design
✓ Heavy Lift Operations
✓ Fabrication
✓ Marine Plant
✓ Project Management
Complete Lock Gate Solutions
Inspection & Surveys
✓ Routine inspections
✓ Emergency inspections
✓ Diver surveys
✓ Structural assessments
✓ Video reports
Repair & Maintenance
✓ Seal replacement
✓ Bearing replacement
✓ Hinge repairs
✓ Corrosion repairs
✓ Steelwork repairs
Refurbishment
✓ Planned shutdown works
✓ Gate overhauls
✓ Hydraulic systems
✓ Mechanical refurbishment
✓Asset life extension
Replacement
✓ Complete gate replacement
✓ Pintles
✓ Shotbolts
✓ Bearings
✓ Timber fenders
Temporary Works
✓ Limpet Dams
✓ Cofferdams
✓ Stop Logs
✓ Access Systems
✓ Isolation Works
Heavy Lift & Installation
✓ Gate removal
✓ Gate installation
✓ Lift planning
✓ Marine cranes
✓ Precision alignment
Trusted by Critical Infrastructure Owners
ABP | Peel Ports | Canal & River Trust | Environment Agency | Associated British Ports | Swansea Marina | Local Authorities
Sluice Gate Inspection, Repair & Refurbishment
In addition to our lock gate expertise, Kaymac is a specialist contractor for the inspection, repair, refurbishment and replacement of sluice gates across water treatment works, reservoirs, flood defence assets, pumping stations, canals, rivers and tidal structures.
Our multidisciplinary teams combine commercial diving, marine civil engineering, mechanical engineering and confined space capabilities to safely access and repair sluice gates in challenging operational environments. Whether undertaking planned maintenance, emergency repairs or complete gate refurbishment, we deliver practical engineering solutions that extend asset life, improve reliability and minimise operational downtime.
Our sluice gate services include:
✓ Sluice gate inspections and condition assessments
✓ Underwater inspections by commercial divers
✓ Seal replacement and leakage repairs
✓ Hinge, pintle and bearing replacement
✓ Hydraulic and mechanical system refurbishment
✓ Corrosion protection and structural steel repairs
✓ Gate removal and replacement
✓ Temporary works, cofferdams and isolation systems
✓ Heavy lifting and installation support
✓ Emergency repair and maintenance
Kaymac has extensive experience working on critical water infrastructure where safety, environmental protection and operational continuity are paramount. Our integrated approach enables us to provide clients with a complete service, from initial inspection and defect diagnosis through to design support, temporary works, refurbishment and final installation.
Whether your project involves flood defence sluice gates, penstocks, intake structures, outfalls or water control assets, Kaymac has the expertise to deliver safe, efficient and reliable engineering solutions throughout the UK.
Why Kaymac?
Specialists—not General Contractors
Unlike many marine contractors, Kaymac delivers lock gate projects using directly employed multidisciplinary teams.
This means we control every stage of the project from inspection through to completion, reducing programme risk, improving quality and providing a single point of responsibility.
What Makes Kaymac Different?
Engineering Capability
We don’t simply provide divers—we provide complete engineering solutions.
Every project is supported by chartered engineers, experienced commercial divers, temporary works specialists and mechanical engineers working together to solve complex infrastructure challenges.
Bespoke Temporary Works
Few contractors can design, fabricate and install their own temporary works systems.
Kaymac regularly designs:
✓ Limpet Dams
✓ Cofferdams
✓ Stop Log Systems
✓ Lifting Frames
✓ Access Platforms
This allows us to undertake repairs that many contractors simply cannot.
Proven Experience
50 years of delivering projects across the UK’s most challenging marine environments.
Projects ranging from £100,000 to over £8 million.
Proven Lock & Sluice Gate Experience
Kaymac has delivered lock gate projects across a wide range of UK marine and flood defence assets.
At Tilbury Docks, Kaymac supported the replacement of major entrance lock gates through bespoke limpet dam design, underwater surveys, pintle replacement and precision shotbolt can installation.
At Hull Marina, Kaymac refurbished two pairs of lock gates, including replacement of seals, hinge pins and sacrificial anodes within a dewatered lock chamber.
At Tawe Barrage, Kaymac completed lock gate maintenance during a planned shutdown, including seal replacement, mechanical repairs, anode replacement and corrosion protection.
At Netham Lock, Kaymac carried out detailed underwater inspections to assess pintles, sealing timbers, cills, quoins and gate alignment.
Why Choose Kaymac for Lock Gate Works?
Kaymac combines commercial diving, marine civil engineering, fabrication, temporary works and confined space capability under one experienced team. This integrated approach allows us to inspect, diagnose, design and deliver lock gate repairs safely and efficiently.
Our lock gate teams are experienced in challenging environments, including tidal waters, restricted access areas, poor visibility, live port environments and time-critical possession windows.
Supporting Critical UK Infrastructure
Lock gates are essential to safe navigation, flood protection and operational continuity. Kaymac helps asset owners maintain, repair and renew lock gate infrastructure to improve reliability, extend service life and reduce operational risk.
Speak to Kaymac About Your Lock Gate Project
Whether you require a lock gate inspection, emergency repair, planned maintenance, pintle replacement or full refurbishment support, Kaymac can help.
Contact Kaymac Marine and Civil Engineering Ltd today to discuss your lock gate requirements in the UK.
