With highly trained staff and an extensive range of specialized high quality equipment, we can deliver successful outcomes on both large and small marine construction projects.

We offer companies a competitive and diverse range of commercial diving and underwater services. We have 54 commercial divers in our dive teams that are qualified as Fitters, Fitter Welders, Engineers, Diesel and Petrol mechanics etc. The engineering and mechanical background and expertise of these personal have been extremely beneficial to our clients in many of our past marine construction projects.

Surveys / Inspections

Bay Underwater Services NZ Ltd regularly completes surveys on international ships passing through various port around NZ and the Pacific Islands. Our company also completes MPI vessel clearances for entry into New Zealand waters and DOC clearances for the Sub-Antarctic Islands.

Some of the services that we can supply are:

Class surveys – Class NK, Lloyds, Bureau Veritas, ABS, DNV GL
Vessel inspections for Class Surveys and entry into NZ waters
MPI Hull inspections and cleaning for bio security clearance in NZ waters
Ship hull inspections and surveys
Live closed circuit TV video inspections and surveys
Underwater digital photographic surveys and inspections
Hydro dam inspections / maintenance
Sewerage treatment plant inspections / maintenance
Clean water supply tank inspections / maintenance

Bay Underwater Services NZ Ltd has completed various repairs on ships including:

Anode installation
Non destructive testing
Bathycorometer Cathodic Protection (CP) readings
Magnetic Partical inspection (welds)
Oil leakage detection (Dual MPI unit)
Damaged propeller cutting, trimming, and balancing
Propeller change-outs in water
Damaged hull plate removal and replacement
Underwater welding with certified divers to class standard
Seachest grill removal, replacements and cleaning

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Marine Construction

Bay Underwater Services NZ Ltd has completed an extensive range of marine construction and commercial diving projects over the last 26 years. See a list of some of our services below:

Vessel inspections for Class Surveys
MPI Hull cleaning for bionsecurity clearance
Deep diving using a decompression chamber and oxygen
Surface supply with voice communication
Wharf repairs and maintenance
Wharf extensions and refurbishment
Underwater construction
Piling – all forms – sheet piling/casings/split casings etc
Concrete – grout, epoxy, and placement
Pipeline and cable laying
Outfall construction and repairs
Underwater cutting
Underwater welding
Underwater explosives
Pile and Pylon repair systems (engineer designed and load ratings)

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Marine Demolition

Bay Underwater Services NZ Ltd has several staff authorised and trained in the use of explosives for Marine Demolition projects. We have also been involved in the refurbishment of several large structures around New Zealand.

Some of the specialised services that we can supply are:

Blasting channels
Underwater cutting
Underwater welding
Underwater explosives
Sinking vessels for underwater reefs

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Sub Sea Salvage

Bay Underwater Services NZ Ltd has been involved in several search and recovery operations including vessels and aircraft. We have also been involved in the unfortunate case of personal searches for lost bodies.

Some of the items we have searched for include:

Un-manned vessel location and recovery
Aircraft recoveries in the ocean
Vessel recovery and oil recovery
Body searches
Chopper salvage
Sinking vessels for artificial reefs

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Vessel and Barge Hire

Bay Underwater Services NZ Ltd has various sizes of vessels available for hire including but not limited to:

Dive works – 7m front opening landing vessel / platform
Te Awaroa - 16.9m aluminium boat with large deck area
Reel Time - 7m profile boat for working in smaller areas
Piling frame for pile driving

We also have access to various other vessels depending on your requirements

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Dredging

Bay Underwater Services NZ Ltd operates a dredging component in addition to diving, and have been involved in such projects as:

Dredging waterways
Construction of marinas
Dredging various marinas around New Zealand
Dredging at various Port companies throughout New Zealand

Bay Underwater Services NZ Ltd has the following equipment to use in dredging projects:

Dredging and de-watering systems
8 inch venturi dredge
Trash pumps etc

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Talk to us about your specific needs

Bay Underwater Services New Zealand Limited have covered an extensive range of underwater work, including the following specialties:

Bottom survey inspections
Bridge and Wharf demolition
Bridge inspections
Cathodic protection readings
Cathodic protection-eg: Anode placement and replacement
Closed Circuit Television Video Surveys and inspections
Concrete, grout and epoxies placement, (All aspects)
Contamination diving – sewerage treatment plants etc
Deep diving using surface decompression chamber and oxygen
DOC vessel clearances for Sub Antarctic Islands
Dredging and de-watering systems
Intake screen repairs and cleaning
MPI vessel inspections for entry into New Zealand waters
MPI vessel hull cleaning (outside New Zealand Territorial Waters)
NDT- Non Destructive Testing
Outfall construction/repairs
Piling (all forms of piling, sheet piles, casings, Split casings etc)

Pipeline and cable laying
Pylon repairs
ROV- Remote operated vehicle, survey and inspection
Search and recovery
Ship hull cleaning, repairs, inspections and surveys
Ship propeller polishing and repairs (Rupert Scale Polishes)
Surface supply air diving with voice communications
Tank Inspections
Underwater (DIGITAL) Photographic Surveys and Inspections
Underwater concreting, grouting and epoxying
Underwater construction
Underwater Cutting
Underwater explosives and demolition
Underwater welding
Vessel salvage – 200 ton of liftbags (closed and open bags sized from 0.5 ton-10 ton)
Vessel supply - vessel, barges, hopper barge excavators, dredges,work platforms and tugs, etc.
Wharf repairs and maintenance