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We proudly serve a broad range of clientele including the leading oil majors, offshore contractors and state-owned oil companies, providing underwater maintenance and repair services to drilling rigs, semi-sub operators, FPSO owners, flotels, and more.

With over 200 full-time diver-technicians, supported by project managers and specialist engineers, we have the depth of in-house expertise to safely handle a wide range of maintenance and repair tasks. We undertake this in full class compliance and cooperation with overhaul specialists around the world to provide a simple, complete safe turn-key solution for your project, minimizing down-time and any associated costs.  

Subsea Global Solutions is well known for generating direct savings in scheduled thruster overhauls and repairs, with de-mounting and re-mounting via our proprietary technology thereby minimizing the cost and time required.

In addition, as the leading underwater class A wet-welding specialists and underwater project managers we can also provide asset integrity repair work for assets to deliver strategic, long-term life-time extension repair projects on older FPSO’s and other units in locations like Africa, Brazil, the Caribbean, Americas, Singapore and Asia-Pacific.  Helping our clients to extend the safe and useful utilization time of their assets (via fully class approved permanent wet-welding techniques) and avoiding allocation of high capex budgets for asset renewals.

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!
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Specialized Underwater Maintenance and Repairs

Subsea Global Solutions is also able to offer our specialist underwater ROV hull cleaning and inspection services for the offshore floating production sector. Using in-house proven technology, we have cleaned offshore FPSO and FSO units in Africa and other locations, over a wide range of biofouling conditions- both micro and macro-fouling.  

This ROV hull cleaning can also serve as a useful condition monitoring role and this can often be combined with other services like class in-water survey inspections by either diver or inspection ROV services, anode replacement maintenance, or repairs to overboards like sea chests or scrubbers.

In the event you have an offshore underwater requirement  that is not mentioned above, please contact us to discuss your specifics.

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

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 received an emergency call recently that a ferry in a remote part of Northeastern Canada was experiencing an oil leak in the port stern tube. Our crew was quickly assembled and dispatched to the vessel to diagnose and repair the cause of the leak.

View Full Case Study

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

Once the port anchor began its ascent, the hawser line gave way and started to rise, but it was found to be a much heavier load—requiring the use of the workboat’s hydraulic crane.

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

The year 2020, and with it the Sulphur regulation for the use of heavy Sulphur fuel oil, is approaching fast. Starting January 2020, it will be illegal to run a ship using fuel containing more than 0.5% Sulphur without the operation of a scrubber, an exhaust cleaning gas system.

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

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

Over the past few months, Subsea Global Solutions has been called on to complete propeller straightening’s and repairs all over the world, including – Canada, Panama, Uruguay, Singapore, and El Salvador. In each case, a team of highly trained Subsea Global Solutions Diver / Propeller Technicians attended the vessel, along with our proprietary large or small propeller press (depending on the job scope) and propeller sectional reduction / optimization gear.

View Full Case Study

Focus On: Underwater Seal Replacement

Over the past few months of 2019, Subsea Global Solutions has performed a number of high-capacity underwater repairs across the globe. A great number of these repairs have focused on 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.

View Full Case Study

Stern Seal Repair – Romania

Back in November, a fully loaded bulk carrier contacted Subsea Global Solutions with a shaft seal issue. Initial reports from the vessel were that they were losing all stern tube oil into the vessel, they were experiencing heavy water ingress through the FWD seal system into the engine room, and the internal seal system clamp ring shifted approximately 70mm inboard.

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

Over the past few months of 2019, Subsea Global Solutions has performed a number of high-capacity underwater repairs across the globe. A great number of these repairs have focused on 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.

View Full Case Study

Biofouling Cleaning Campaign – Korea-Oct 2017

Earlier this year, Subsea Global Solution’s office in Busan, Korea completed a biofouling cleaning campaign on one of the largest vessels in the world. A floating liquified natural gas (FLNG) vessel – with an LOA of 488m – it was launched in 2013 and took almost four years to complete, whereby the vessel’s hull had expectedly collected a significant amount of fouling.

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

Over the past few months of 2019, Subsea Global Solutions has performed a number of high-capacity underwater repairs across the globe. A great number of these repairs have focused on 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.

View Full Case Study

Propeller Repairs – Worldwide – March 2018

Over the past few months, Subsea Global Solutions has been called on to complete propeller straightening’s and repairs all over the world, including – Canada, Panama, Uruguay, Singapore, and El Salvador. In each case, a team of highly trained Subsea Global Solutions Diver / Propeller Technicians attended the vessel, along with our proprietary large or small propeller press (depending on the job scope) and propeller sectional reduction / optimization gear.

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.

View Full Case Study

Biofouling Cleaning Campaign – Korea-Oct 2017

Earlier this year, Subsea Global Solution’s office in Busan, Korea completed a biofouling cleaning campaign on one of the largest vessels in the world. A floating liquified natural gas (FLNG) vessel – with an LOA of 488m – it was launched in 2013 and took almost four years to complete, whereby the vessel’s hull had expectedly collected a significant amount of fouling.

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

We began the operation inside the vessel by templating the immediate area of the hull around the existing fracture. The hull templating serves two purposes, it tells the size and geometry of the insert plate and it provides us with the surface area and geometry needed to fabricate the cofferdam onsite.

View Full Case Study

Subsea Global Solutions Completes an Afloat Rudder Stock Seal Replacement

This complex underwater repair was completed to the client's satisfaction in 5 days in conjunction with various other repair works. Subsea Global Solutions managed both the underwater and internal portions of this repair to ensure each phase was executed seamlessly.

View Full Case Study

Subsea Global Solutions Restores Heavily Corroded Rudder

The repair was based on underwater welding only, eliminating the need for the installation of open top cofferdams or other barriers that would allow dry welding repairs to take place, which requires more time and resources. Subsea Global Solutions Long Beach mobilized two 5-man teams of commercial divers and welder divers to operate around the clock during cargo operations until the underwater repair was concluded.

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

Over the past few months of 2019, Subsea Global Solutions has performed a number of high-capacity underwater repairs across the globe. A great number of these repairs have focused on 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.

View Full Case Study

Propeller Repairs – Worldwide – March 2018

Over the past few months, Subsea Global Solutions has been called on to complete propeller straightening’s and repairs all over the world, including – Canada, Panama, Uruguay, Singapore, and El Salvador. In each case, a team of highly trained Subsea Global Solutions Diver / Propeller Technicians attended the vessel, along with our proprietary large or small propeller press (depending on the job scope) and propeller sectional reduction / optimization gear.

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.

View Full Case Study

Stern Seal Repair – Romania

Back in November, a fully loaded bulk carrier contacted Subsea Global Solutions with a shaft seal issue. Initial reports from the vessel were that they were losing all stern tube oil into the vessel, they were experiencing heavy water ingress through the FWD seal system into the engine room, and the internal seal system clamp ring shifted approximately 70mm inboard.

View Full Case Study

Biofouling Cleaning Campaign – Korea-Oct 2017

Earlier this year, Subsea Global Solution’s office in Busan, Korea completed a biofouling cleaning campaign on one of the largest vessels in the world. A floating liquified natural gas (FLNG) vessel – with an LOA of 488m – it was launched in 2013 and took almost four years to complete, whereby the vessel’s hull had expectedly collected a significant amount of fouling.

View Full Case Study

Oil Leak Repair – August 2017

Subsea Global Solutions Halifax received an emergency call recently that a ferry in a remote part of Northeastern Canada was experiencing an oil leak in the port stern tube. Our crew was quickly assembled and dispatched to the vessel to diagnose and repair the cause of the leak.

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

Expert Services For the Offshore Oil & Gas Industry

In this difficult environment, Subsea Global Solutions has been supporting its clients operating in this industry through generating direct savings in scheduled thruster overhauls and repairs, their de-mounting and re-mounting via our proprietary technology thereby minimizing the cost and time required.

We also perform strategic, long term life-time extension repair projects on older FPSOs, helping our clients to extend the useful utilization time of their assets (via fully class approved permanent wet-welding techniques) and avoiding allocation of high capex budgets for asset renewals.

Offshore Oil & Gas

Hull Cleaning

With over 200 full-time diver-technicians, supported by project managers and specialist engineers, we have the depth of in-house expertise to safely handle a wide range of maintenance and repair tasks. We undertake this in full class compliance and cooperation with overhaul specialists around the world to provide a simple, complete safe turn-key solution for your project, minimizing down-time and any associated costs.  

Subsea Global Solutions is well known for generating direct savings in scheduled thruster overhauls and repairs, with de-mounting and re-mounting via our proprietary technology thereby minimizing the cost and time required.

In addition, as the leading underwater class A wet-welding specialists and underwater project managers we can also provide asset integrity repair work for assets to deliver strategic, long-term life-time extension repair projects on older FPSO’s and other units in locations like Africa, Brazil, the Caribbean, Americas, Singapore and Asia-Pacific.  Helping our clients to extend the safe and useful utilization time of their assets (via fully class approved permanent wet-welding techniques) and avoiding allocation of high capex budgets for asset renewals.

Specialized Underwater Maintenance and Repairs

Subsea Global Solutions is also able to offer our specialist underwater ROV hull cleaning and inspection services for the offshore floating production sector. Using in-house proven technology, we have cleaned offshore FPSO and FSO units in Africa and other locations, over a wide range of biofouling conditions- both micro and macro-fouling.  

This ROV hull cleaning can also serve as a useful condition monitoring role and this can often be combined with other services like class in-water survey inspections by either diver or inspection ROV services, anode replacement maintenance, or repairs to overboards like sea chests or scrubbers.

In the event you have an offshore underwater requirement  that is not mentioned above, please contact us to discuss your specifics.

Expert Services For the Offshore Oil & Gas Industry

In this difficult environment, Subsea Global Solutions has been supporting its clients operating in this industry through generating direct savings in scheduled thruster overhauls and repairs, their de-mounting and re-mounting via our proprietary technology thereby minimizing the cost and time required.

We also perform strategic, long term life-time extension repair projects on older FPSOs, helping our clients to extend the useful utilization time of their assets (via fully class approved permanent wet-welding techniques) and avoiding allocation of high capex budgets for asset renewals.

Looking for underwater welding maintenance and repair services?

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Request Service