MMC Diving Services

"Since 1964"

24 hour Emergency Line: 01983 864 330


    MMC are specialist providers of access engineering solutions including rescue, rope access and confined space works. The combination of these services allows MMC to offer innovative solutions to various challenging tasks, often in hazardous and difficult working conditions.

    We believe that it is our commitment to safety and innovation, as well as our multi-skilled personnel.

  • Our equipment is maintained to a very high standard in our own workshops and is subject to our stringent in-house, planned maintenance procedures carried out by our skilled technicians.

    All maintenance, logs, inventories and certificates are networked, uploaded and viewable on every site.

  • We operate as both main contractors and as specialist sub-contractors and would be pleased to discuss or tender for any marine civil engineering related projects that you are involved with.

  • Although we provide services to most marine industries our core activities and specialist skills are concentrated in six key sectors:

    • Renewable energy
    • Submarine cables
    • Marine civil engineering
    • Water and waste water
    • Defence, construction and demolition
  • Drilling, cutting, burning, welding and breaking equipment, inspection, testing and surveying equipment, Cardox rock, concrete material breaking and blasting system, maintenance, construction and demolition, support vessels, boats and barges, grouting and concreting, breakout and replacement, thickness NDT, tanks and ships, interpretive report writing on any survey or inspection.

  • We develop lasting relationships by exceeding expectations. We operate as both main contractors and as specialist sub-contractors and would be pleased to discuss or tender for any marine civil engineering related projects that you are involved with.

  • We aim to provide the very best service available. We love what we do and this is transparent in our work and your results.

    MMC has a range of hydraulic, pneumatic tools and burning, welding equipment available. Please contact us to discuss your requirements.

  • We have a 55 foot barge, accommodation for a full dive team and welfare facilities on board which include a galley, office, shower and heads with a purpose built drying room. One hull is a workshop with storage space.

    Self sufficient with a 52 kva 3 phase generator and available to rent. Please contact us for further information.

  • We strive at all times to maintain our excellent safety record and our goal for all projects is to have no incidents or accidents to our personnel, co-workers or the public at large, protecting not just ourselves but the reputation of our clients.

  • We would welcome clients to visit our facilities to reassure themselves of our capabilities and to appreciate our total commitment to their requirements.


Underwater Magnetic Particle Inspection Unit (MPI) Weld Testing

MMC’s underwater magnetic particle inspection (MPI) is designed as a useful diver operated underwater MPI system for shallow water/tidal water use.

This is a fully portable underwater MPI unit capable of being used by divers in shallow water or tidal conditions.Our unit doesn’t require any form of umbilical connection to the surface and is capable of sustaining the inspection operation for up to 4 hours duration. The result of this development is an inspection system powered from a 12 volt rechargeable battery unit and comprising battery/control unit, DC electromagnetic yoke and a high intensity UV light incorporating an arc discharge bulb for high ultraviolet content in the light produced. Magnetic ink can be supplied by attaching the optional ink dispensing unit or even from the surface.

Underwater Magnetic Particle Inspection Unit (MPI) Weld Testing

The pressure housings for the battery/electronic control unit and the lamp are fabricated from anodised aluminum alloy and are pressure tested to a depth of 600 feet. A unique power-saving feature of the unit is that both the lamp and the DC electromagnetic yoke can be switched on/off by the diver. The electronic control system used for the gas discharge bulb in the UV lamp enables maximum UV output to be produced within 30 seconds of switching on the lamp and the electromagnetic yoke incorporates a sealed switch unit giving the diver full operational control. In the event that the optional dispensing system is used, the ink supply to the work piece can be incorporated into the handle of the UV lamp.

Underwater Magnetic Particle Inspection Unit (MPI) Weld Testing

Our Divers:

MMC's team of experienced divers includes CSWIP 3.1u, 3.2u and 3.4u qualified inspection personnel. Our divers all hold the relevant commercial diving and CSWIP and HSE approved certifications enabling them to support the delivery of subsea MPI testing calibration and measuring survey services.

Subsea inspection services include:

  • Above and below water inspection of structures and facilities.
  • Detailed survey, inspection, investigation and assessment of subsea structures.
  • MMC also include subsea cathodic protection and ultra-thickness inspections.
  • Scour, geological sea bed and river surveys.
  • Emergency call out response for infrastructure inspection.

Download PDF data sheet

< Return to plant hire list

Royal Institute Of Navigation Association of Diving Contractors UK Health and Safety Executive Construction Line Royal Ocean Racing Club Royal Society for the Prevention of Accidents accredited Achilles UVDB Sea Start Offical Divers Buy With Confidence Sea Shield Approved Applicators HCL Clamping Solutions Joscar Registered