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Our Certified Propeller Technicians perform sophisticated Class-approved underwater propeller repairs, which include straightening large bends, precision cropping and design modifications worldwide.

Underwater Propeller Repair Services

  • 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.

Have an underwater maintenance or repair service request?

Subsea Global Solutions provide underwater maintenance and repair services to your marine assets. Contact us to request a service quote today!
Request Service

Underwater Design Modification Solutions

  • 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.

Overhauling demountable thrusters, commercial diving solutions, offshore semi-sub drillship

Offshore Asset Maintenance, biofouling and repositioning support

Enjoy our short trailer on Offshore Asset Maintenance services.

Got heavy biofouling? You need a PORTABLE C-ROV!

Enjoy our short trailer on our Cleaning Remote Operated Vehicle, the PORTABLE C-ROV, ideally suited for heavier macrofouling before repositioning your vessel or offshore asset.

Overhauling demountable thrusters, commercial diving solutions, offshore semi-sub drillship

Case Studies

Employee Spotlight: Uwe Aschemeier

We're proud to spotlight Uwe Aschemeier, our Head of Welding Services. With extensive experience as a commercial diver, Uwe is also an award-winning educator and a respected speaker in the underwater welding industry, known for his dedication to advancing industry standards and sharing his expertise worldwide.

View Full Case Study

Advanced Underwater Welding Training in Long Beach, CA

In October, Subsea Global Solutions held its advanced underwater welding training course in our training center in Long Beach, providing a comprehensive 10-day program designed to hone practical skills and qualify participants for new joint geometries and/or new welding positions.

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Underwater Weld Repairs – Requirements and Execution

Underwater welding, especially underwater wet welding, is gaining more and more acceptance. This article from Welding & Cutting Magazine takes a deep dive into types, procedures, and codes.

View Full Case Study

Skeg Ripped from Azipod

3 month out of dry dock, galvanic corrosion caused heavy cavitation/erosion damage on PORT and STBD side rudders.

View Full Case Study

Hull Breach on Tanker

During cargo operations, a submerged pile pierced through the hull. Subsea Global Solutions worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam.

View Full Case Study

Offshore Oil and Gas

A Blue-Chip oil & gas company incurred several defects and cracks in a critical attachment member of an FPSO’s hull – these defects required repair to allow continued operation.

View Full Case Study

Bilge Keel Repair on FPSO

Design flaws together with poor workmanship caused the bilge keel to fracture during operation in several locations. Subsea Global Solutions worked together with the owner and Class to perform permanent underwater wet weld repair on the fractures, without interrupting the production.

View Full Case Study

Oil Leak Repair – August 2017

Subsea Global Solutions Halifax quickly resolved an oil leak crisis on a remote Canadian ferry with careful night repairs, revealing a deteriorated weld issue.

View Full Case Study

Subsea Global Solutions Removes Anchor Chain Debris Before Vessel's Planned Departure

Efficient removal of anchor chain debris by Subsea Global Solutions before the vessel's planned departure. Trust our expertise for timely and reliable debris removal services.

View Full Case Study

Double Bow Thruster Removal by Subsea Global Solutions

The benefits of removing a damaged bow thruster afloat are many. The customer was able to prevent further damage to the bearings and gears caused by the presence of seawater in the gear housing and the procedures allows the units to be overhauled prior to the vessels next dry-dock—or, they can be re-installed afloat by Subsea Global Solutions, which would help to eliminate the need for additional tug cost.

View Full Case Study

Afloat Bow Thruster Blade Seal Exchange by Subsea Global Solutions

The project was executed with two Subsea Global Solutions teams working around the clock. While the vessel trimming process was in motion, the team onboard the vessel began to drain the oil from the thruster while the dive team began removing the bow thruster tunnel gratings to gain full access to the bow thruster.

View Full Case Study

Scrubber Overboard Spool Pipe Repairs with 5 Year Warranty

The installation of complete SOx scrubber systems is entirely possible without taking the vessel out of the water. Subsea Global Solutions' involvement is focused on precision cutting of the hull penetrations for the sea chest openings and overboard spool pipe installation below the waterline.

View Full Case Study

Scrubber Installation Without Dry Docking

Discover our innovative scrubber installation solution without dry docking. Minimize downtime and costs while ensuring compliance. Learn more today.

View Full Case Study

Propeller Shaft Replacement and DNV Approved Rudder Horn Repair while Afloat

Subsea Global Solutions (SGS) recently completed a challenging underwater repair for a commercial ship owner whose vessel had suffered severe grounding damage including a badly damaged propeller, partial loss of the rudder horn, rudder damage, and even...

View Full Case Study

DryDock Magazine Interview - The Big 3Rs of Rudder Repairs Afloat

DryDock Magazine recently interviewed Harun (Aaron) Duzgoren (CCO), and Kevin Peters (Director, Technical Sales & Environmental Services) about a significant 100+ tonne rudder repair operation carried out afloat on a fully laden mainline container vessel.

View Full Case Study

Subsea Global Solutions solves serious problems: Assisting a large, fully laden post-Panamax container vessel with steering issues

Subsea Global Solutions solves serious problems: Assisting a large fully laden Post-Panamax container vessel with steering issues. Subsea Global Solutions works with port authorities, class, and manufacturers to provide class-approved in-water float out removal, repair, and refit of a 110 mt rudder. Find out how our underwater inspection and survey services deliver practical, cost-effective solutions to a complex offshore problem. Subsea Global Solutions works with port authorities, class, and manufacturers to provide class-approved in-water rudder float out removal, repair, and refit of a 110 mt rudder. Helping owners safely reduce their risk exposure and related costs that would include diversions, delays, and downtime.

View Full Case Study

Galvanic Corrosion damage on Rudders

3 months out of dry dock, galvanic corrosion caused heavy cavitation/ erosion damage on PORT and STBD side rudders.

View Full Case Study

Subsea Global Solutions delivers marine dredging project to improve mooring access

Another happy client back to business: 3800 CPM of sand & silt dredged in a short time window, and under budget! Read the full case study here.

View Full Case Study

Propeller Shaft Replacement and DNV Approved Rudder Horn Repair while Afloat

Subsea Global Solutions (SGS) recently completed a challenging underwater repair for a commercial ship owner whose vessel had suffered severe grounding damage including a badly damaged propeller, partial loss of the rudder horn, rudder damage, and even...

View Full Case Study

Underwater Propeller Blade Straightening & Cold Static Loading

Subsea Global Solutions can restore your propeller blades as a permanent repair, to OEM design geometry by cold static loading with our underwater propeller blade press.

View Full Case Study

Subsea Global Solutions Replaces Propeller Blades After Contact Damage

Subsea Global Solutions started its underwater repair process by establishing load-rated rigging points above the propeller using 4F Class A wet welding procedures to allow safe new replacement propeller blade transfer of the propeller blades.

View Full Case Study

Propeller Repairs – Worldwide – March 2018

Subsea Global Solutions' propeller repair services in Canada, Panama, Uruguay, Singapore, and El Salvador. Explore our expert Diver's methods and tools.

View Full Case Study

Propellers: How Smooth is Smooth?

By utilizing a multi-stage polishing process and diver / technicians trained in the proper analysis of the propeller condition, Subsea Global Solutions' process has proven to be an integral part of fuel efficiency programs. The benefits of maintaining a polished propeller have been known for years, but what has not been known is "how smooth is smooth"?

View Full Case Study

Focus On: Underwater Seal Replacement

Subsea Global Solutions performs high-capacity underwater repairs worldwide. Discover the innovative techniques and use of TransHab for underwater seal replacement.

View Full Case Study

Twin Shaft Seal Repair – South Pacific

As part of the cruise industry’s focus on the environment, a vessel operating in the South Pacific developed a minor problem with both of its shaft seals. Read how Subsea Global stepped in to provide a solution.

View Full Case Study

Stern Seal Repair – Romania

Subsea Global Solutions fixed a special shaft seal issue on a loaded bulk carrier, stopping oil loss and water entry. Stern seal repair in Romania, Nov '17.

View Full Case Study

Thruster Overhaul on SSDU Independencia-2 (formerly La Muralla IV)

In 2024, Subsea Global Solutions completed a complex overhaul of eight thrusters on the La Muralla oil rig, led by our Curaçao-based team, ensuring the rig's peak performance through rapid, on-site servicing.

View Full Case Study

Offshore installation, underwater shell plate damage, class approved repair without drydocking

Class approved shell plate underwater damage repairs to offshore semi-submersible platform without drydocking.

View Full Case Study

DryDock Magazine Interview - The Big 3Rs of Rudder Repairs Afloat

DryDock Magazine recently interviewed Harun (Aaron) Duzgoren (CCO), and Kevin Peters (Director, Technical Sales & Environmental Services) about a significant 100+ tonne rudder repair operation carried out afloat on a fully laden mainline container vessel.

View Full Case Study

Scrubber Overboard Spool Pipe Repairs with 5 Year Warranty

The installation of complete SOx scrubber systems is entirely possible without taking the vessel out of the water. Subsea Global Solutions' involvement is focused on precision cutting of the hull penetrations for the sea chest openings and overboard spool pipe installation below the waterline.

View Full Case Study

Hull Breach on Tanker

During cargo operations, a submerged pile pierced through the hull. Subsea Global Solutions worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam.

View Full Case Study

Offshore Oil and Gas

A Blue-Chip oil & gas company incurred several defects and cracks in a critical attachment member of an FPSO’s hull – these defects required repair to allow continued operation.

View Full Case Study

Bilge Keel Repair on FPSO

Design flaws together with poor workmanship caused the bilge keel to fracture during operation in several locations. Subsea Global Solutions worked together with the owner and Class to perform permanent underwater wet weld repair on the fractures, without interrupting the production.

View Full Case Study

Focus On: Underwater Seal Replacement

Subsea Global Solutions performs high-capacity underwater repairs worldwide. Discover the innovative techniques and use of TransHab for underwater seal replacement.

View Full Case Study

Twin Shaft Seal Repair – South Pacific

As part of the cruise industry’s focus on the environment, a vessel operating in the South Pacific developed a minor problem with both of its shaft seals. Read how Subsea Global stepped in to provide a solution.

View Full Case Study

Biofouling Cleaning Campaign – Korea-Oct 2017

Subsea Global Solution's impressive biofouling cleaning operation on a massive FLNG vessel in Busan. Explore the difficulties and creative approaches.

View Full Case Study

DryDock Magazine Interview - The Big 3Rs of Rudder Repairs Afloat

DryDock Magazine recently interviewed Harun (Aaron) Duzgoren (CCO), and Kevin Peters (Director, Technical Sales & Environmental Services) about a significant 100+ tonne rudder repair operation carried out afloat on a fully laden mainline container vessel.

View Full Case Study

Scrubber Overboard Spool Pipe Repairs with 5 Year Warranty

The installation of complete SOx scrubber systems is entirely possible without taking the vessel out of the water. Subsea Global Solutions' involvement is focused on precision cutting of the hull penetrations for the sea chest openings and overboard spool pipe installation below the waterline.

View Full Case Study

Skeg Ripped from Azipod

3 month out of dry dock, galvanic corrosion caused heavy cavitation/erosion damage on PORT and STBD side rudders.

View Full Case Study

Underwater Propeller Blade Straightening & Cold Static Loading

Subsea Global Solutions can restore your propeller blades as a permanent repair, to OEM design geometry by cold static loading with our underwater propeller blade press.

View Full Case Study

Double Bow Thruster Removal by Subsea Global Solutions

The benefits of removing a damaged bow thruster afloat are many. The customer was able to prevent further damage to the bearings and gears caused by the presence of seawater in the gear housing and the procedures allows the units to be overhauled prior to the vessels next dry-dock—or, they can be re-installed afloat by Subsea Global Solutions, which would help to eliminate the need for additional tug cost.

View Full Case Study

Afloat Bow Thruster Blade Seal Exchange by Subsea Global Solutions

The project was executed with two Subsea Global Solutions teams working around the clock. While the vessel trimming process was in motion, the team onboard the vessel began to drain the oil from the thruster while the dive team began removing the bow thruster tunnel gratings to gain full access to the bow thruster.

View Full Case Study

Subsea Global Solutions Replaces Propeller Blades After Contact Damage

Subsea Global Solutions started its underwater repair process by establishing load-rated rigging points above the propeller using 4F Class A wet welding procedures to allow safe new replacement propeller blade transfer of the propeller blades.

View Full Case Study

Focus On: Underwater Seal Replacement

Subsea Global Solutions performs high-capacity underwater repairs worldwide. Discover the innovative techniques and use of TransHab for underwater seal replacement.

View Full Case Study

No solution? Think again! – Aft shaft bearing repair, Hong Kong – April 2018

A deep-sea bulk carrier fully loaded with goods had become immobilized due to a failure of the aft shaft bearing. In the past, not much could be done to help a vessel in this situation. With no way to transit on its own power and loaded with a perishable cargo, an economical solution needed to be developed quickly. Read more.

View Full Case Study

Propeller Repairs – Worldwide – March 2018

Subsea Global Solutions' propeller repair services in Canada, Panama, Uruguay, Singapore, and El Salvador. Explore our expert Diver's methods and tools.

View Full Case Study

Twin Shaft Seal Repair – South Pacific

As part of the cruise industry’s focus on the environment, a vessel operating in the South Pacific developed a minor problem with both of its shaft seals. Read how Subsea Global stepped in to provide a solution.

View Full Case Study

Biofouling Cleaning Campaign – Korea-Oct 2017

Subsea Global Solution's impressive biofouling cleaning operation on a massive FLNG vessel in Busan. Explore the difficulties and creative approaches.

View Full Case Study

DryDock Magazine Interview - The Big 3Rs of Rudder Repairs Afloat

DryDock Magazine recently interviewed Harun (Aaron) Duzgoren (CCO), and Kevin Peters (Director, Technical Sales & Environmental Services) about a significant 100+ tonne rudder repair operation carried out afloat on a fully laden mainline container vessel.

View Full Case Study

Subsea Global Solutions solves serious problems: Assisting a large, fully laden post-Panamax container vessel with steering issues

Subsea Global Solutions solves serious problems: Assisting a large fully laden Post-Panamax container vessel with steering issues. Subsea Global Solutions works with port authorities, class, and manufacturers to provide class-approved in-water float out removal, repair, and refit of a 110 mt rudder. Find out how our underwater inspection and survey services deliver practical, cost-effective solutions to a complex offshore problem. Subsea Global Solutions works with port authorities, class, and manufacturers to provide class-approved in-water rudder float out removal, repair, and refit of a 110 mt rudder. Helping owners safely reduce their risk exposure and related costs that would include diversions, delays, and downtime.

View Full Case Study

Scrubber Overboard Spool Pipe Repairs with 5 Year Warranty

The installation of complete SOx scrubber systems is entirely possible without taking the vessel out of the water. Subsea Global Solutions' involvement is focused on precision cutting of the hull penetrations for the sea chest openings and overboard spool pipe installation below the waterline.

View Full Case Study

Galvanic Corrosion damage on Rudders

3 months out of dry dock, galvanic corrosion caused heavy cavitation/ erosion damage on PORT and STBD side rudders.

View Full Case Study

Skeg Ripped from Azipod

3 month out of dry dock, galvanic corrosion caused heavy cavitation/erosion damage on PORT and STBD side rudders.

View Full Case Study

Hull Breach on Tanker

During cargo operations, a submerged pile pierced through the hull. Subsea Global Solutions worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam.

View Full Case Study

Underwater Propeller Blade Straightening & Cold Static Loading

Subsea Global Solutions can restore your propeller blades as a permanent repair, to OEM design geometry by cold static loading with our underwater propeller blade press.

View Full Case Study

Bilge Keel Repair on FPSO

Design flaws together with poor workmanship caused the bilge keel to fracture during operation in several locations. Subsea Global Solutions worked together with the owner and Class to perform permanent underwater wet weld repair on the fractures, without interrupting the production.

View Full Case Study

Subsea Global Solutions Reseats Shifted Tailshaft Afloat and Executes a Stern Seal Repair

The client indicated that the tailshaft had shifted aft approximately 200 mm when the ship’s crew was doing maintenance on the shaft coupling. It resulted in the aft water seal losing contact with the liner, causing large amounts of water ingress into the stern tube.

View Full Case Study

Double Bow Thruster Removal by Subsea Global Solutions

The benefits of removing a damaged bow thruster afloat are many. The customer was able to prevent further damage to the bearings and gears caused by the presence of seawater in the gear housing and the procedures allows the units to be overhauled prior to the vessels next dry-dock—or, they can be re-installed afloat by Subsea Global Solutions, which would help to eliminate the need for additional tug cost.

View Full Case Study

Afloat Bow Thruster Blade Seal Exchange by Subsea Global Solutions

The project was executed with two Subsea Global Solutions teams working around the clock. While the vessel trimming process was in motion, the team onboard the vessel began to drain the oil from the thruster while the dive team began removing the bow thruster tunnel gratings to gain full access to the bow thruster.

View Full Case Study

A Turn-Key SOx Scrubber Spool Pipe Replacement by Subsea Global Solutions, with a 5-Year Coating Warranty

The client was in need of a turn-key—class approved—permanent repair. This included a single contractor that would manage the internal technical repair team, commercial diver team, prefabrication of the new spool pieces with flanges, final application of the 5-year warranty POLYFLAKE protective coating to 3000 microns on the new spool pipes, and achieving final class approval for the full repair procedure.

View Full Case Study

Subsea Global Solutions Repairs Hull Fracture in way of Bilge Keel

Subsea Global Solutions successfully repairs hull fracture in the way of the bilge keel. Trust our expertise for reliable and efficient hull repairs. Learn more today.

View Full Case Study

Subsea Global Solutions Completes an Afloat Rudder Stock Seal Replacement

Successful completion of afloat rudder stock seal replacement by Subsea Global Solutions. Trust our expertise for reliable and efficient seal replacements.

View Full Case Study

Subsea Global Solutions Restores Heavily Corroded Rudder

Subsea Global Solutions restores the heavily corroded rudder to optimal condition. Trust our expertise for effective and reliable rudder restoration services. Learn more today.

View Full Case Study

Subsea Global Solutions Replaces Propeller Blades After Contact Damage

Subsea Global Solutions started its underwater repair process by establishing load-rated rigging points above the propeller using 4F Class A wet welding procedures to allow safe new replacement propeller blade transfer of the propeller blades.

View Full Case Study

Focus On: Underwater Seal Replacement

Subsea Global Solutions performs high-capacity underwater repairs worldwide. Discover the innovative techniques and use of TransHab for underwater seal replacement.

View Full Case Study

No solution? Think again! – Aft shaft bearing repair, Hong Kong – April 2018

A deep-sea bulk carrier fully loaded with goods had become immobilized due to a failure of the aft shaft bearing. In the past, not much could be done to help a vessel in this situation. With no way to transit on its own power and loaded with a perishable cargo, an economical solution needed to be developed quickly. Read more.

View Full Case Study

Propeller Repairs – Worldwide – March 2018

Subsea Global Solutions' propeller repair services in Canada, Panama, Uruguay, Singapore, and El Salvador. Explore our expert Diver's methods and tools.

View Full Case Study

Twin Shaft Seal Repair – South Pacific

As part of the cruise industry’s focus on the environment, a vessel operating in the South Pacific developed a minor problem with both of its shaft seals. Read how Subsea Global stepped in to provide a solution.

View Full Case Study

Stern Seal Repair – Romania

Subsea Global Solutions fixed a special shaft seal issue on a loaded bulk carrier, stopping oil loss and water entry. Stern seal repair in Romania, Nov '17.

View Full Case Study

Biofouling Cleaning Campaign – Korea-Oct 2017

Subsea Global Solution's impressive biofouling cleaning operation on a massive FLNG vessel in Busan. Explore the difficulties and creative approaches.

View Full Case Study

Oil Leak Repair – August 2017

Subsea Global Solutions Halifax quickly resolved an oil leak crisis on a remote Canadian ferry with careful night repairs, revealing a deteriorated weld issue.

View Full Case Study

Subsea Global Solutions delivers marine dredging project to improve mooring access

Another happy client back to business: 3800 CPM of sand & silt dredged in a short time window, and under budget! Read the full case study here.

View Full Case Study

Trained & Certified Propeller Technicians

Our Certified Propeller Technicians perform sophisticated Class-approved underwater Ship 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.

Underwater Propeller Blade Straightening (Cold Static Loading)

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.

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

Fast Response

Straightening systems are designed and packaged for swift worldwide mobilization from key Subsea Global Solutions offices by air cargo or even as checked baggage on passenger flights.

CONTACT US NOW

Underwater Ship Propeller Repairs

Hull Cleaning

Underwater Propeller Repair Services

  • 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.

Underwater Design Modification Solutions

  • 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.

Trained & Certified Propeller Technicians

Our Certified Propeller Technicians perform sophisticated Class-approved underwater Ship 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.

Underwater Propeller Blade Straightening (Cold Static Loading)

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.

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

Fast Response

Straightening systems are designed and packaged for swift worldwide mobilization from key Subsea Global Solutions offices by air cargo or even as checked baggage on passenger flights.

CONTACT US NOW

Looking for underwater maintenance and repair services?

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Request Service