Nepsys® Dry Underwater Welding / Welders

The NEPSYS® system is unique, class approved, patented technology that produces a permanent surface quality weld in an underwater environment.

It was recognised that existing underwater welding technologies provided only temporary solutions that required subsequent rework and imposed significant operational impacts and substantial costs.

NEPSYS® delivers an underwater welding repair solution that achieves an approved, permanent weld that is equal to dry standards.


  • Permanent repair solution
  • Produces high quality structural weld
  • Customised repair solutions
  • Minimal operational impact
  • Certified & accredited to GL, ABS, Lloyds and DNV standards
  • Compliant to various welding codes including:
  • AWS D3.6 2017 Class A
  • Mil STD 1689
  • ISO 15614-10
  • ISO 5817 level B
  • Patented internationally