• 01929 405029
  • info@questmarine.co.uk
The expertise you need combined with state-of-the-art technology

Commercial Diving

Commercial Diving Services

Quest Marine Services was originally formed as a civil engineering diving company, and commercial diving remains a core part of our business to this day. With extensive experience in a wide range of underwater operations, we offer safe, reliable, and professional diving services across the UK and internationally.

Our commercial divers and support personnel are fully trained and certified in line with all UK legislation and health and safety requirements. We can deploy rapidly to any site in the UK or overseas and are equipped with modern surface demand diving systems that can also be mobilised at short notice.

We are proud to be a full member of the Association of Diving Contractors, upholding the highest standards in commercial diving operations.

State-of-the-Art Technology

Quest is capable of undertaking air dives to depths of up to 50 metres, utilising the latest in diving and inspection equipment to carry out a wide range of underwater services. While we offer a broad scope of solutions, some of our most requested and specialist services include:

Inspections and Surveys

  • Visual inspections
  • Photographic and video surveys
  • Ultrasonic thickness measurements using Cygnus gauges

Marine Construction & Civil Engineering

  • Coded underwater welding
  • Ultrathermic cutting and burning (BROCO systems)
  • Hydraulic and pneumatic drilling
  • Air lifting operations
  • Underwater concreting

Cathodic Protection Systems

  • Installation of sacrificial anodes
  • Installation and inspection of impressed current systems

Explosive Ordnance Disposal (EOD)

Quest has extensive experience in handling Explosive Ordnance Disposal (EOD) surveys, investigations, and underwater risk consultancy. We work with specialist ex-military divers and consultants to provide high-level support in areas where suspected underwater ordnance is present. Our capabilities include:

  • EOD surveys and threat assessments
  • Risk mitigation and consultancy
  • Cooperation with regulatory and defence agencies

Why Choose Quest for Commercial Diving?

  • Certified Divers – All personnel operate in accordance with UK diving regulations and safety legislation
  • Rapid Deployment – Available for immediate mobilisation across the UK and overseas
  • Modern Equipment – Surface demand systems and specialist underwater tools
  • Multi-Discipline Capability – Structural, inspection, welding, EOD, and marine civils
  • Proven Track Record – Decades of experience across ports, harbours, offshore, and infrastructure environments

Get in Touch

If you require commercial diving support—from underwater welding and construction to inspection surveys and EOD consultancy—Quest Marine Services has the expertise to deliver safely and efficiently.

Email: sam@questmarine.co.uk
Phone: +44 7785 737420

Emergency Response
For an instant response call us on 01929 405029 (Out of Hours - 07730 684556)
You can also email us at info@questmarine.co.uk
Today Quest provides a large range of diving and marine related services and owns and operates a comprehensive fleet of marine plant and equipment from our operations base at Portland Harbour Dorset.
Find Us
  • Quest Underwater Services Ltd,
    Ferrymans Way,
    Weymouth,
    Dorset, DT4 9YU
  • 01929 405029
  • 07730 684 556
  • info@questmarine.co.uk
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