• Straightening large bends.
• Removal of damaged blade sections.
• Crack repair and propagation control.
• Restoration of hydrodynamic edge contours.
• Static balancing (calculations on-site).
• Hydrodynamic balancing (calculations on-site).
• Replacement of C.P. blades and blade seals.
• Installation of energy saving fin propeller caps such as PBCF and EnergoProFin.

• Pitch and camber alterations using underwater pitch meters.
• Diameter and blade area reduction.
• Correction of propeller induced engine overload.
• Contour modification to eliminate cavitation.
• Edge modification, including anti-singing edge correction.

Our Certified Propeller Technicians perform sophisticated Class-approved underwater propeller repairs, which include straightening large bends, precision cropping and design modifications worldwide.
Upon completion of extensive on-site practical and formal training, our Technicians are qualified to accurately assess propeller condition and determine the best-engineered repair solution to maximize propulsive efficiency.

Class approved permanent repairs- previously possible only in a workshop after propeller removal - are now possible underwater using proprietary equipment and procedures.

Large deflections can be straightened underwater in hours; dockside or at anchor. The underwater straightening process entails many cycles of cold static loading applied in sequence throughout the deflection. Sections up to 50mm thickness can be restored to design geometry and approved by Class as permanent repairs using our proprietary cold static loading and precision laser geometry measurement equipment and procedures.

SGS maintains a full range of purpose designed straightening equipment sizes to handle everything from tunnel thrusters to Super Yachts to ULCCs.

Subsea Global Solutions (SGS) offers support for a wide range of inland and offshore construction projects. Our dive teams utilize surface supplied air, and mixed gas breathing systems to work safely at in-water depths up to 300 feet.

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SGS is recognized as a market leader in underwater marine construction, with long-term port service contracts in place with some of the largest ports and harbors in the world. Our marine construction division is staffed by project managers who have spent decades in the field, in the, water, refining their skills and knowledge base. We employ staff engineers who can support your project from initial design to final completion. SGS is proud to be one of the only professional underwater service companies capable of offering high quality, turnkey solutions for our client's most critical marine construction needs. Port services include:

• Timber Pile Repair & Splicing
• Concrete Pile Repair & Splicing
• Steel Pile Repair & Splicing
• Structural Rehabilitation
• Underwater Form Building & Concrete/Grout Pumping
• Cathodic Protection System Maintenance & Repair
• Debris Removal & Recovery Services
• Sheet Pile/Sea Wall Support & Repair
• Water Jetting & High Pressure Cleaning Systems
• Trash Recovery & Disposal

Our inspection services cover Non Destructive Testing in both the Ultrasonic and Magnetic Particle Inspection disciplines, with up to date equipment owned by SGS. Our services include:

• Slope Surveys
• Seabed Surveys
• Corrosion Surveys
• Quality Assurance Inspection
• In Service Inspections
• Job Progress
• Planned Maintenance Inspection
• Damage Investigation
• Insurance Inspection
• ROV Inspection Services

Subsea Global Solutions is able to supply a range of remotely operated vehicles to meet the inspection demands of clients where water depth, bottom time and or hazardous situations mandate the use of non-manned intervention methods.

A number of these vehicles are small and lightweight and can generally be operated by two persons out of a small boat or from the land.

ROV operations are particularly well suited to deep or hazardous applications of an observational only nature.

ROV’s are also often used for:

• Power stations
• Remote weirs and dams
• Potable water storage reservoir inspections
• Internal pipeline inspection down to 500mm diameter
• Diver support
• Inspection beyond normal diving range
• Initial site surveys down to depths of 150 meters
• Cathodic potential surveys

The vehicles can be fitted with high resolution color cameras, acoustic navigation systems and manipulators for basic operations such as small object recovery, sample collection and basic rigging.

SGS is able to offer a range of Ultrasonic testing services including thickness testing using both digital and "A scan" equipment along with full weld inspection using angle beam probes.