FOR STRUCTURAL INVESTIGATIONS ACROSS ENGLAND & NORTHERN IRELAND
Call: 01707 327 785 Email: testing@hendersonthomas.co.uk

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  • We are the UKAS Accredited PTSI & NDT Experts

Boat / Underwater / Marine Inspection

Trained & Certified teams available

Our RYA Level 2 Speed Boat Handler / Engineer can carry out Inspections, Investigations and Testing to structures that require the use of a boat to safely access any particular element.

HTA boat handlers can aide and assist your engineers in facilitating a variety of inspections (principal and or general inspections) to be carried out in a safe and timely manner.


Water related projects are multi-discipled and need multi-skilled staff
requiring an array of equipment
HTA can provide the full service saving you time money and hassle


Boats & Pontoons: Safe, certified & manoeuvrable

HTA boats are fully capable to be used as safety boats for inspections and come with the following additional benefits.

  • We own our own: Boats used are owned & maintained by us, saving clients boat sourcing time and hassle.

  • Certificated Boats: All our boats are British Safety Scheme (BSS) certified. Inline with Canal and River Trust and Environment Agency Regulations.

  • Access All Areas: These boats are lightweight and inflatable allowing easy access to awkward and difficult locations.

Variety of Outboard Motors

Importantly our outboard motors come in a variety of engine sizes. The more powerful ones can be utilised for manoeuvring pontoons into place, while the smaller motors work perfectly for access when water is too shallow for larger motor rotors.


Underwater Surveys

We supply qualified divers to undertake underwater surveys and have suitably qualified surveyors to carry out a variety of topographical surveys

Henderson Thomas Associates (HTA) can carry out Inspections, Investigations and Testing to structures that require the use of a boat and or pontoon to safely access any particular element.

These include:

  • Underwater / Dive
    Supply of dive team to ascertain inspection details
  • Topographic Surveys
    Bed profile surveys related back to datum points on bridges for scour assessment
  • Scour Assessment
    Probing and underwater inspections for scour

HTA working on Scour under water


Water related projects are multi-discipled and need multi-skilled staff
requiring an array of equipment
HTA can provide the full service saving you time money and hassle

Be site safe

Ensure the project is carried out safely with our; DEFRA 2 (swift water & flood first responders SFR) and RYA 2 Speed Boat Handlers

HTA are also able to supply all relevant safety and rescue equipment necessary for working above water and we can supply an underwater inspection / Topographic (TOPO) services if so required for structures adjacent to rivers and coastal areas.


Still got questions? Give us a call!

Take advantage of our Open Door Policy

Even if you do not end up using HTA we are happy to advise on the best course of action for the outcome you wish to achieve.

It is impossible for one company to carry out every project, however we can share our expertise far and wide.

Call: 01707 327 785 or Email: testing@hendersonthomas.co.uk