Patent Slipway, Wharf Demolition.

Annual barge maintenance.

MV Medusa: Neptune’s newest fleet addition.

Capabilities

We are experienced and skilled in all areas of construction diving, marine construction/maintenance engineering, and ship repairs/maintenance. 

Services, resources and expertise we offer include but are not limited to;


Vessel supply

  • Small aluminium work punts.

  • Vessel Trident: 8m x 2.5m aluminium dive vessel powered by 250HP outboard.

  • Vessel Medusa: 8.5m Naiad RHIB with passenger endorsement.

  • Barge Rakiwa: 12m x 4m steel, self propelled flat bottom barge, with 7T deck loading capability, certified 2T Hiab, mounted 6T deck winch & ‘roll on, roll off’ capability & certified to carry dangerous goods for remote fuel transfer at sea.


 Services

  • Light fabrication

  • Fabrication trailer for site works:

    • 350amp Lincoln single/3 phase generator/welder

    • LP Compressor

    • Retractable hose reels

    • Suitcase welder

    • Dropdown steel table/vice

    • Oxy/acetylene

  • General Marine Construction:

    • Vessel supply

    • Vessel transfers

    • Marine assistance team, including on site in-water and/or diving capability

    • Barge supply, including 6T deck winch, 2T hiab (9m reach), 7T deck loading & ‘roll on, roll off’ capability

  • Moorings:

    • Inspections

    • Mooring component supply/installation

    • Bespoke mooring block fabrication

  • Shipping:

    • Surveys, incl. CCTV

    • Maintenance/repairs, incl. welding

    • Propellor polishing

    • Anode fitment/replacement (bolt/weld on)

    • Speed log, or transducer replacement

    • Blanking for pipe repairs

    • Biosecurity surveys

  • Bridges, or in-water structures:

    • Cleaning of accumulated detritus on upstream side of bridge piles/piers

    • Inspections, including comprehensive reporting with supplied solutions

    • Repairs to concrete, bridge piles/piers

    • Sleeve fabrication/installation, including underwater grouting

  • Pipelines:

    • Inspections

    • Repairs,

    • Concrete blankets

  • Marine Infrastructure:

    • Compilation of planned maintenance systems

    • Inspections i.e. visual, photo, and/or video

    • Repairs i.e. concreting, sleeving piles (timber, concrete, or steel), stump repairs or similar

    • Welding to, or cutting of steel piles

    • Demolition i.e. removal of piles or other marine structures

    • Assistance with post earthquake revetment i.e. geotextile cloth, and/or rip rap placement etc.

  • Non Destructive Testing

    • Cygnus Ultrasonic Thickness Tester

    • Magnetic particle testing

    • Buckleys Underwater Bathycorrometer for CP testing

  • Geotechnical:

    • Scala Penetrometer Testing

    • Shear Vane

    • Push tube sampling

    • Probing/jetting/lancing

  • River/Stream revetment:

    • Inspections

    • Site clearance

    • Concrete (or similar) bag placement

    • Gabion basket placement

  • Underwater cutting/welding

  • Environmental Spill Incursion


Resources

  • Fabrication workshop.

  • Hiab truck.

  • 1.6T digger.

  • Concrete mixer/s.

  • SCUBA spread/s.

  • Surface Supplied Breathing Apparatus (SSBA) spread/s, with CCTV capability.

  • Hydraulic spread, including 2 x power packs, synflex hoses and any/all tooling i.e. drills, breakers, concrete saws, chainsaws etc.

  • Pneumatic spread, including LP/HP compressors & ancillary tooling.

  • Electrical spread (portable), including generators (petrol/diesel), welders & ancillary tooling.

  • Battery tools for surface work in remote or intrinsically restricted environments

  • Underwater welding spread.

  • Underwater cutting/demolition spread i.e. for all materials like steel, concrete, timber etc.

  • Fabrication trailer/spread incl. oxy/acetylene.

  • Lift bags for floating/towing heavy loads, or salvage operations.

  • Airlifts for dredging operations.

Enquiries

Please give us a call to talk over your next project – we’re keen to see how we can help and make it success.