Underwater Maintenance & Inspection

National Marine Services performs in-water surveys and offers inspection services, including underwater inspection in lieu of dry docking (UWILD), on a majority of shipping vessels entering Oman waters. Inspections will often require National Marine Services to carry out underwater CCTV video/photography services and Non Destructive Testing.

National Marine Services is the only commercial diving organisation in Oman offering these services and holds all major class society approvals in order to carry out these services

For maintenance National Marine Services provides In-water hull Cleaning, propeller polishing to Rupert Scale A, cleaning of sea suction grates, ship side valve openings and transducers/transponders.

Shipping maintenance & repairs services include:

In-water Surveys and Inspection

  • CCTV Video Inspection
  • Still Photography


  • In-water Hull Cleaning
  • Cavitation Cleaning
  • Propeller Polishing
  • Cleaning Sea Suction Grates
  • Cleaning transducers/transponders

Corrosion Inspection and Protection

  • Non Destructive Testing (NDT)
  • Denso Seashield
  • Underwater Epoxy

Subsea Welding

  • MMA Wet Welding
  • Anode Replacement
  • Hull Repairs
  • Sea Walls
  • Subsea Cutting& Burning

Hydraulic Tools

  • Cutting
  • Drilling
  • Grinding
  • Chainsaw

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