New Zealand Diving and Salvage Ltd bring a creative and innovative approach to underwater construction. We can support existing projects, or alternatively we will complete turnkey projects by providing a design package, carry out the construction, and take responsibility for downstream maintenance.
New Zealand Diving and Salvage Ltd are experienced in:
- Installation and maintenance of ocean pipeline outfalls
- Waste water treatment plant construction and repair
- Hydro dam maintenance and repair
- Water supply dam maintenance and repair
- Pipeline river crossings
- Submarine cable installation and burial
- Harbour beacon installation and repair
- Marina construction, maintenance and repair
- Marine farm installation and maintenance
- Harbour channel blasting and clearance
- Sediment removal using airlift and water jetting eductor pumps
- Water jet/blast cleaning
- Drilling - handheld and mechanical air track equipment
- Underwater explosive blasting
- Underwater oxy arc cutting
- Underwater hydraulic abrasive and diamond cutting and drilling
- Concrete form work construction
- Concrete and grout placement
- Pile cutting and removal
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Wharf repiling and restoration
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Core sampling and field testing of the recovered samples
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Insitu testing. SPT, CPT, shear vane. Rock coring
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Geotechnical survey by using a diver operated drilling rig