HM Denham is a custom built 17 m catamaran work boat, which is a stable and adaptable vessel. With 240 and 24 volt electric supply throughout, a wide range of equipment can be mobilised on board. She offers a comfortable and well equipped working area both inside and on deck.

HM Denham can be supplied with master, crew and work teams that are fully qualified and trained for the job at hand.

The vessel has 4 berths, a well equipped workshop, a shower & WC, and a comfortable galley / mess. An additional 4m inflatable can be mobilised on request.

This vessel is a proven workhorse having completed numerous dive, ROV and
survey contracts including the return of many clients for repeat work.


Vessel Dimensions
LOA 17.0 m
Beam 7.00 m
Draught 2.00 m

Work Boat Code ‘CAT 2’ (IMCA certified)
Coded for maximum 12 persons

Service speed 8 - 10 kts
Twin 270 kW Doosan marine diesel engines

Power Supplies & Communication
2 x 10 kVA marine generators
Stand-alone hydraulic power unit (diver friendly)
Dual VHF

Additional Features

30 m2 operations deck
2 x 3T Gilson winches
2 x 350 kg capstan winches
1 x 3T Hiab (bow) & 1 x 1.5T Hiab (stern)
2 m x 1.5 m Moonpool
Commercial dive lift


Commercial diving 
ROV & AUV operations
Filming / photography
Guard vessel 
Training & educational
Ships husbandry

Supplies / hot shot
Moorings deployment / recovery
Marine construction 
Archaeological investigation
2-4 point mooring operations

Survey Work Scopes

Inshore / near shore geophysical survey

  • MBES survey
  • UXO survey
  • SSS survey
  • Shallow geology surveys
  • USBL incl. Diver / ROV tracking

Environmental Survey

  • Water sampling
  • Seabed sampling
  • Marine mammal surveys
  • Fish surveys

Oceanographic Survey

  • Oceanographic equipment deployments / recover
  • Current monitoring
  • Tide gauge deployment / recovery

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