Every active trading vessel is required by its classification society to undergo a UWILD (Underwater Inspections in Lieu of Dry-docking) or Class In-Water Survey (Class IWS) periodically depending on the type of asset. These are required to ensure the structural and operational integrity of a marine asset throughout its life span. These inspections also ensure regulatory compliance in accordance with the IMO and Flag State.

• Underwater Inspection in Lieu of Dry-docking
• Class In-Water Surveys
• Biofouling Inspections
• General Hull Inspections/ Underwater Examination (UWE)
• Condition Surveys
• Pre-Purchase Surveys
• Sea Chest Inspections
• New Zealand MPI Inspection Services
• Impact Damage Inspections
• Propeller Crack Detections
• Underwater Structural Inspections
• Seabed Surveys
• Corrosion Surveys
• NDE Inspections
• Marine Construction Inspections such as dams, power stations, bridge inspections.

• Rupert A+ Propeller Polishing

  According to the ICCT, propellor polishing can reduce gas emissions by 2% - 5% and when executed on a regular period basis; 2.5% - 8%. The same can be said for hull cleaning, which can reduce gas emissions in a range of 1%-10%. With the new regulations being adopted by the IMO come 2023 in regard to decarbonization through ship emissions, a trusted underwater service partner who can deliver reliable services around the globe will be paramount to ensure your vessel remains in the acceptable range of A,B, or C.

  Propeller surface roughness directly effects propeller efficiency. New propellers are delivered with a higher surface roughness than propellers polished underwater by Subsea Global Solutions. Why? Subsea Global Solutions uses a multi-stage polishing process to consistently deliver a propeller polished better than Rupert "A". What does this mean to your ship? Higher propeller efficiency equals lower fuel consumption. Subsea Global Solutions is pleased to be able to provide Rupert A+ propeller polishing through proprietary techniques delivering a consistent 0.4 micron surface roughness.

  Subsea Global Solutions continues to research and develop new process methodology to make this typical maintenance chore into an essential fuel saving efficiency improvement and driving more dollars to ship owners and operators bottom line. Let us be a strategic part of your Ship’s Efficiency Management Plan.

  Test Protocol and Purpose​

  The multi-stage process was perfected in Subsea Global Solutions underwater training tanks on actual propeller blades, allowing accurate roughness measurements to be taken electronically. The procedure was developed over time using many conditioning pads of various surface types and materials.  The final outcome established the optimal materials, equipment, and time. ​Wartsila Propulsion attended the testing providing 3rd party verification of all testing results, the SGS process, and materials used.

  Beluga Eco-friendly Propeller Polishing and Niche Area Cleaning System

  The Beluga Eco-friendly cleaning system was designed to manage the ever increasing threat of invasive species and—if needed, to also treat soluble metals that may be present in effluent water. With filtration capabilities up to 5 microns, the Beluga system has interchangeable tools that can be connected to it for the execution of hull niche area cleaning or eco-friendly propeller polishing.

  We offer a wealth of commercial diving expertise for all types of marine based construction projects.  From initial consultancy to design and documentation, fabrication, engineering, installation and final commissioning, Subsea Global Solutions provides a complete solution.

  No two subsea construction projects are ever the same and that's why the experience we offer is so important. Subsea Global Solutions was established in 1945 and has been in continuous operation since then spreading around the world.

  Services Include:

  • Submarine/Underwater Pipelines
  • Inland Water Storage & Hydroelectric Facilities
  • Wharf and Bridge Constructions & Repairs
  • Concrete Repair