Intergroup has provided ship cleaning, surface preparation and painting services across NZ for 35+ years. This includes work at Devonport’s Calliope Drydock, Lyttelton Drydock, Titan Marine Slipway in Auckland, and slipways in Whangarei, Nelson (Calwell), Dunedin and Timaru.

With Intergroup at the helm, you will receive service that will really ‘float your boat.’


Water Jetting

  • Removal of marine growth, corrosion and coatings
  • Cleaning of all surfaces including hull, decks and flight decks
  • Ship industrial services e.g. cleaning of pipes, ducting, tubes, engine rooms, boilers, plant etc.
  • Steam cleaning and chemical application units also available

Vacuum Loading

  • Removal of dry and wet waste, including sludge from ballast, fuel, sewage and greywater tanks
  • Large fleet from 3,000L to 24,000L capacity – selected to suit your needs
  • Dry and wet filtration for dust/particle control
  • Powerful vacuums for lifting in excess of 30m vertically and 200m horizontally (27″ Hg)
  • Dangerous goods certification, breathing apparatus and confined space entry available

Waste Removal

  • Transport, delivery, dewatering, treatment and consented disposal

CCTV Pipeline Inspection, Cleaning and Repair

Abrasive Blasting and Industrial Coatings


Cost-Effectiveness, Speed and Efficiency

  • A one-stop shop for all your specialist marine and industrial services needs
  • Broadest range of machines in New Zealand – methods can be tailored to suit your needs, budget and programme
  • Scalable resources (30 operators) to meet your deadline, no matter the project size
  • Flexible service – we will work at dry docks, alongside while berthed, or even while in transit
  • Low, high, and ultra-high pressure water jetting up to 55,000 psi (highest available pressure for optimal speed)
  • A range of pumps up to 1,000hp
  • Single, double or multi-jet gun operation (up to six tools from one pump for efficiency)
  • Removal rates of up to 15m2 per hour
  • Specialised marine tools e.g. Hydrocat 55,000 psi robotic tool for rapid and safe hull coating removal
  • Innovative solutions (e.g. spreader bars for wider coverage in one pass to meet tight deadlines)


  • Experienced operators and stringent quality assurance to your specifications

Risk Reduction and Reputation

  • Containment of waste for safety and environmental protection
  • Full training and equipment for working at heights, water blasting and confined space access
  • Robotic tools with remote control enhance safety by reducing work at heights
  • Familiar with dockyard safety requirements and naval security protocols


Royal NZ Navy Dockyard, Devonport

  • 25-year relationship of trust and satisfaction
  • Intergroup is preferred exclusive supplier for all marine and ship industrial services
  • Servicing of national and international naval and commercial vessels including ferries (e.g. the Interislander Arahura), container/shipping vessels, navy frigates, dive boats and superyachts


“The Intergroup team quickly met the challenges of cleaning the machinery spaces on the ex Royal New Zealand Navy Ship, RESOLUTION. The surfaces within the machinery spaces were covered in an oily film and dust. Cleaning was undertaken to bilges, machinery, deck plates, and bulkheads; and was completed ahead of time and to the required standard. Their friendly, motivated and professional staff take huge pride in their work and are a pleasure to deal with.”

Matt Penny,
Project Manager,
Marine Management Ltd