Electrical engineering for things that can’t stop.
Ships that have to make the tide. Bridges that have to lift on time. Plant that has to keep running. Since 1966, LEC Marine has designed, built, installed and tested the electrics behind them, from our workshops in Lowestoft.
60 yearsof marine and industrial electrical engineering, since 1966
24 hrrepair service, across the UK and abroad
690 Vswitchboards and control panels, built in Lowestoft
6,000 AAC current injection, in our workshop or on site
1989the year we first gained ISO 9001 approval, now certified by LRQA
Who we work for
From engine rooms to treatment works.
The same skills keep a supply vessel at sea, a jack-up working and a pumping station running. Here is how we put them to work in each of our six sectors.
01
Marine
Supply and standby vessels, tugs, anchor handlers, trawlers, ferries and yachts. Repairs at scheduled port calls or emergency breakdowns, plus new installations, refits and survey work.
Qualified electrical engineers for offshore oil and gas installations and jack-up barges, backed by our workshop for hazardous and safe area equipment.
Repairs, new installations, refits and periodic surveys for factories, process plant and moving road bridges, including bridges we have maintained in Lowestoft and Great Yarmouth for many years.
Power distribution, machinery and process equipment
Safe and hazardous area control panels for treatment works, including sites for Thames Water, installed and repaired by our own CompEx-trained engineers.
Hand-overs between firms are where details get lost. So we don’t have them: the engineers who draw your system work alongside the people who build, install and certify it, on one site in Lowestoft.
One point of contact. One set of drawings. One certificate.And one number to ring, 24 hours a day, if it ever needs attention.
01
Design
Our own design engineers draw every system in AutoCAD Electrical, from load analysis and discrimination of protective devices to cable routing and segregation. Plan approval to Lloyd’s, DNV, BV and other Class rules when you need it.
02
Build
Switchboards and control panels are made in our own manufacturing workshop, on bespoke steelwork or proven enclosures, with components from Schneider, ABB and other leading makers.
03
Install
Time-served engineers fit it on board, offshore or on site, with CompEx-trained engineers for hazardous areas. Class inspections during manufacture and installation if required.
04
Test and certify
Every job ends with a written report and certificate of test from calibrated equipment, plus NICEIC certification to BS 7671 where it applies.
Switchboards & control panels
Built in Lowestoft. Specified by you.
From a single starter to a main switchboard suite, we design and manufacture bespoke LV switchgear for ships, offshore installations, factories and treatment works. Our ISO 9001:2015 certification covers the design and manufacture of every board, so full documentation and test certificates come as standard.
Voltage
Up to 690 V AC, 3-phase, 3 or 4 wire. DC systems up to 220 V.
Busbars
ASTA-approved system, rated 50 kA for 1 second as standard
Protection
Up to IP54 for switchboards and IP66 for control panels
Separation
Up to Form 4 Type 7
Enclosures
Steel or aluminium in the colour of your choice, or polished stainless. Wall or floor standing.
Approval
Classification Society approval if required
Components
Schneider, ABB, Telemecanique, Megacon, Crompton, Klippon and more
Main switchboards
Emergency switchboards
Motor control centres
Control consoles
Individual starters
VSDs and soft starts
Process control panels
Hazardous area panels
Power factor correction
PLC panels
LV switchboard, ready for factory testingPower distribution and motor control centre
Spec your panel
Start a quote in 30 seconds
Pick the basics and we’ll add them to your enquiry. Not sure? Choose “Not sure” and our design team will advise.
Test, inspection & certification
Survey due? We’ll test it, prove it and sign it off.
With our own workshop and portable current injection sets, we test and recertify protection on board, offshore and ashore. Every job comes with a full written report and certificate of test, from equipment that is itself regularly tested and calibrated.
Marine & offshore
To Classification Society requirements
ACB and MCCB recertification for five-yearly surveys
Primary and secondary current injection
Generator protection: short circuit and overload
Reverse power and earth monitoring equipment
Insulation (Megger) surveys
Buildings & plant
NICEIC, to BS 7671
Periodic surveys and inspections
Emergency lighting inspections
Fire alarm inspections
Portable appliance testing (PAT)
Power usage analysis and fault diagnosis
We work closely with Lloyd’s Register, DNV and Bureau Veritas, and test equipment from ABB, Schneider, Telemecanique, Megacon, Siemens and Deif.
Current injection set, used in the workshop or taken to site
6,000 AAC current injection, with a certificate of test on completion
Featured project · Gull Wing Bridge, Lowestoft
When Lowestoft’s Gull Wing lifts, it runs on our cabling.
Lowestoft’s third river crossing, opened in September 2024, needed its hydraulic, power and control systems wired by people who know moving bridges. Working for MEICA contractor Oilgear Towler, a firm we had already partnered with on other road bridges, we started the cabling and containment installation in October 2023.
The Gull Wing Bridge over Lake Lothing
Cabled, terminated and tested by us
Main and emergency switchboards, north and south
Emergency generator controls
Hydraulic pump VSD switchboards and pump motors
Bridge operation and alarm monitoring systems
UPS systems
Road and river traffic control and signalling
Navigation and aircraft warning lighting
Part of the main switchboard suite
Every cable was checked and tested against Oilgear Towler’s schematics as it was terminated, and certified to BS 7671 with NICEIC certification.
The lifting road bridge over the River Yare, electrically maintained by our team.
Mutford Road Bridge and lock, Oulton Broad
Joining Lake Lothing and Oulton Broad, and also maintained by us.
From the job sheet
A few of the jobs that leave our yard.
Not every project is a landmark bridge. Most are the steady, exacting work that keeps vessels sailing and sites running, and we take the same care over all of it.
Emergency switchboard for a new 69 m vesselDesigned and built in our manufacturing workshop.
Power distribution and motor control centreDesigned and built for British Sugar’s factory at Cantley.
Extra deck power on the jack-up Seajacks LeviathanSupporting North Sea wind farm installation work.
LED flood lighting for survey vessel Highland SpiritNew lighting on her aft deck and gantry, fitted at Great Yarmouth.
Hazardous area power distribution skidBuilt to the client’s requirements for an offshore jack-up barge.
EPU/HPU refurbishmentNew hazardous area control gear, cabling, Ex glands and a rebuilt main pump motor.
Our workshops and offices on Whapload Road, Lowestoft
About LEC Marine
Sixty years of keeping the east coast powered.
L.E.C. Marine was first registered in 1966, and we’ve served the marine, industrial and offshore industries ever since. Around 25 full-time staff work from our Lowestoft site: time-served engineers, technicians and design engineers, led by a management team with deep electrical engineering experience of its own.
1966L.E.C. Marine first registered, at Great Yarmouth.
1989First ISO 9001 approval, held continuously ever since.
2005Bought by Roger Klyne of Klyne Tugs, joining the Klyne group of companies.
2006Moved into new purpose-built workshops with offices on Cumberland Place.
2013Added three more units and a purpose-built main office as the work grew.
2023Began the MEICA cabling installation for Lowestoft’s Gull Wing Bridge, opened in 2024.
On site: an electrical engineering workshop, a switchboard and control panel manufacturing workshop, a general workshop, two storage units and our main office.
Mark SawyerManaging Director
Kevin WoollardTechnical Manager
Careers
Electricians: bring your skills somewhere they’re tested.
We’re recruiting approved electricians and electrical technicians for an immediate start. If you can carry out repairs, installation and testing to a high standard with minimal supervision, in marine, industrial or hazardous area environments, we’d like to hear from you.
£35,880 to £40,560approximate basic salary depending on qualifications and experience, plus overtime and an on-call allowance
Company vehicle usually provided
31.5 days’ paid holiday a year
Company pension and death in service cover
Training towards the requirements for the right candidate
The ideal candidate has
City & Guilds 236 parts 1 and 2, or NVQ 3 equivalent
City & Guilds 2391 Test and Inspection
BS 7671 IET 18th Edition
CompEx 1 to 4
ECS Gold Card
A clean, current UK driving licence
Experience of electrical maintenance and fault diagnosis is an advantage. All positions are full time and subject to a probationary period.
Yes. Office hours are 8am to 5pm, Monday to Friday, and a full 24-hour repair service runs through our main number, 01502 516971, outside those hours. Ring it for breakdowns on board, offshore or on site.
Where do you work?
From our base in Lowestoft we cover the whole east coast, including Great Yarmouth and the rest of Norfolk and Suffolk, and we work throughout the UK and abroad.
Can you build a switchboard to our drawings, or design one from scratch?
Both. Our in-house design engineers can take your specification and produce full AutoCAD Electrical drawings, or build to your own approved drawings. Either way the board is made in our Lowestoft workshop and tested before it leaves.
Do you work to Classification Society rules?
Yes. We carry out design, manufacture and installation to Lloyd’s Register, DNV, ABS, Bureau Veritas and MCA requirements, with plan approval and Class inspections during manufacture and installation if required.
Can you recertify our ACBs and MCCBs for a five-yearly survey?
Yes. We carry out primary and secondary current injection up to 6,000 A AC, in our workshop or on board, and test generator protection, reverse power modules and earth monitoring equipment to Class requirements. You get a certificate of test on completion.
Are your engineers qualified for offshore and hazardous areas?
Our offshore engineers hold BOSIET with CA-EBS and MIST as a minimum, plus CompEx 1 to 4 for hazardous area equipment. For Norwegian waters they also have escape chute training, a full medical and in-water training.
What paperwork do we get?
A full written report and certificate of test with every test and inspection job, NICEIC certification for installation work to BS 7671, and full supporting documentation and test certificates for every switchboard and control panel we build.
Get a quote
Tell us what you need.
Send us the details and a drawing or spec if you have one. Our office team reads every enquiry during office hours. For a breakdown, call us now on 01502 516971.
Phone, 24 hours01502 516971Our 24-hour repair service runs through this number
