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Subsea Global Solutions is the only company capable of delivering a complete turn key demountable thruster exchange including experienced service technicians for inboard and outboard operations, stand jacks systems, diving systems, and experienced diver/technicians.

Afloat Demountable Thruster Exchange

Subsea Global Solutions is the diving contractor of choice for underwater exchange of demountable azimuthing thrusters. We are the only company capable of delivering a complete turn key package including experienced service technicians for inboard and outboard operations, stand jacks systems, diving systems, experienced diver/technician, allowing Subsea Global Solutions to have complete coordination on the job coupled with detailed planning ensure that the "inboard" operations being performed are synchronized with diving operations "outboard" of the vessel. This proven model has delivered on time and budget every time.

In addition to turn key removal and replacement of azimuthing thrusters, Subsea Global Solutions can provide complete overhauls of all makers with OEM parts or OEM equivalent parts. With years of experience exchanging azimuthing and tunnel thrusters in the most remote locations of the world, Subsea Global Solutions has the industry leading expertise and local vetted partners to support the offshore industry in all its areas of operation throughout the world.

We have pioneered the methods of exchanging of underwater demountable azimuthing thrusters without the need for expensive and weather dependent crane barges. Developing fully engineered plans of thruster exchange utilizing our buoyancy control procedures, large demountable units can be simply, safely and reliably exchanged in sea states up to Beaufort 2 using the rigs crane.

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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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.

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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.

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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

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

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

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

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

Restoring Propeller Performance on a Heavy-Load Carrier in Palm Beach, Florida

Discover how Subsea Global Solutions swiftly resolved propeller damage for a heavy-load carrier in Palm Beach, restoring performance and efficiency with precision repairs.

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

Restoring Propeller Performance on a Heavy-Load Carrier in Palm Beach, Florida

Discover how Subsea Global Solutions swiftly resolved propeller damage for a heavy-load carrier in Palm Beach, restoring performance and efficiency with precision repairs.

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.

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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

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

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

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

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

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

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

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

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

Underwater Demountable Thruster Exchanges & Repairs

Hull Cleaning

Afloat Demountable Thruster Exchange

Subsea Global Solutions is the diving contractor of choice for underwater exchange of demountable azimuthing thrusters. We are the only company capable of delivering a complete turn key package including experienced service technicians for inboard and outboard operations, stand jacks systems, diving systems, experienced diver/technician, allowing Subsea Global Solutions to have complete coordination on the job coupled with detailed planning ensure that the "inboard" operations being performed are synchronized with diving operations "outboard" of the vessel. This proven model has delivered on time and budget every time.

In addition to turn key removal and replacement of azimuthing thrusters, Subsea Global Solutions can provide complete overhauls of all makers with OEM parts or OEM equivalent parts. With years of experience exchanging azimuthing and tunnel thrusters in the most remote locations of the world, Subsea Global Solutions has the industry leading expertise and local vetted partners to support the offshore industry in all its areas of operation throughout the world.

We have pioneered the methods of exchanging of underwater demountable azimuthing thrusters without the need for expensive and weather dependent crane barges. Developing fully engineered plans of thruster exchange utilizing our buoyancy control procedures, large demountable units can be simply, safely and reliably exchanged in sea states up to Beaufort 2 using the rigs crane.

Looking for underwater maintenance and repair services?

Contact Us 24/7
Request Service