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Class approved permanent repair processes are established using underwater wet welding, atmospheric dry welding or hyperbaric dry welding for permanent repairs to incidental hull damage below the water line. With an in-house Engineering department headed by our Senior Welding Engineer, who has decades of welding experience on topside and underwater, Subsea Global Solutions is capable of Structural Engineering and writing repair procedures detailing the welding process and scope of repair to be developed upfront for pre-approval by Head Offices of major Classification Societies or insurance underwriters. Having a pre-approved repair procedure by the Class damage department gives the customer a guarantee that a permanent repair is achieved on time wherever or whenever required.
Welder/Diver technicians are trained, qualified and their qualifications renewed every 2 years in one of the three training tanks at Subsea Global Solutions facilities. All welders WPQR’s are done on Classification Society certified paper to the Class A requirements of AWS D3.6M: Underwater Welding Code.
Subsea Global Solutions is the only diving company globally to have a Workshop Approval for Underwater Welding by DNV.
Subsea Global Solutions designs and manufactures cofferdams of all sizes and configurations. Well versed in the development of flexible as well as rigid hyperbaric (open bottom) or atmospheric cofferdams.
Learn more about Underwater Blankings & Cofferdams
Learn more about Underwater Welding in this Build-up Underwater Welding Repair
Hydroweld FS wet underwater welding electrodes are the result of significant research and development into flux formulations, filler metals and supplementary coatings. They are designed to work in all positions in fresh water, brine or saltwater, and have been used to successfully perform wet weld repairs have been performed to a depth of 300 meters. Their outstanding user-friendly properties and wet welding characteristics, easily produce high quality wet welds to internationally recognized standards. Hydroweld FS is the electrode of choice where high-quality wet welding is required. They have meet the class A requirements of AWS D3.6M for fillet and groove wet welds as has been witnessed by Lloyds Register of Shipping (LR), American Bureau of Shipping (ABS), Det Norske Veritas (DNV), Bureau Veritas (BV), and Rina. Hydroweld FS wet welding electrodes are currently the only wet underwater welding electrodes approved for permanent and temporary repairs on war ships by the British Ministry of Defense (MoD). This was gained after intensive underwater comparability testing and further NDE and destructive testing against all other commercially available wet welding electrodes by the MoD and The Welding Institute (TWI). As a result, the electrodes are now included in the NATO codification system.
Enjoy our short trailer on Offshore Asset Maintenance services.
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.
Subsea Global Solutions was engaged to perform an emergency underwater shaft seal repair on a mid-size cruise vessel docked in Eleusis, Greece.
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Subsea Global Solutions' Whitney McDonald Shares Her Journey in Welding and Diving with AWS Cincinnati.
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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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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 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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Subsea Global Solutions executes underwater wet welding on a cruise ship, restoring structural strength while minimizing downtime.
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During cargo operations, a submerged pile pierced through the hull of a tanker. Subsea Global Solutions worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam without the need for costly drydock delays.
View Full Case Study
A Blue-Chip oil & gas company incurred several defects and cracks in a critical attachment member of an FPSO’s hull – Subsea Global Solutions provided these defects the repairs required to allow continued operation.
View Full Case Study
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.
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Subsea Global Solutions divers executed a complex underwater oil leak repair on a ferry in Canada, showcasing precision and compliance in marine repair solutions.
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Subsea Global Solutions removes obstructive anchor chain debris underwater, enabling safe vessel departure and minimizing operational delays.
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Subsea Global Solutions completes a complex double bow thruster removal, showcasing expertise in underwater engineering and vessel support.
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Subsea Global Solutions delivers an afloat bow thruster repair, restoring full functionality and minimizing downtime for vessel operators.
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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.
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Subsea Global Solutions delivers turnkey scrubber installations without drydocking. Reduce emissions and stay compliant with minimal vessel downtime.
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When a roll-on/roll-off ship (RO-RO) required an immediate thruster installation and rudder bushing repairs, Subsea Global Solutions stepped in to deliver a seamless in-water solution.
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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...
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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.
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Subsea Global Solutions was called to assist a large, fully-laden Post-Panamax container vessel that developed steering gear problems. We quickly resolved the problem and got the ship back on track.
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Subsea Global Solutions repairs galvanic corrosion on both PORT and STBD side rudders on a vessel only 3 months out of dry dock.
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Subsea Global Solutions completes a marine dredging project to improve mooring access, ensuring safer and more efficient vessel operations.
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When a propeller sustains damage beyond the straightening capabilities of even the largest press equipment, hydrodynamic corrections offer an innovative and effective solution.
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Not all propeller damage can be straightened. When blades are fractured, chipped, or excessively bent, cropping becomes necessary. However, cropping an odd-numbered blade propeller presents unique challenges that must be carefully managed.
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Subsea Global Solutions’ proprietary propeller straightening technology offers a far more efficient and cost-effective alternative to blade cropping.
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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 StudySubsea 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
Discover how Subsea Global Solutions restored efficiency with underwater propeller blade straightening using cold static loading.
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Following contact damage, Subsea Global Solutions delivers expert underwater propeller blade replacement to restore vessel performance quickly.
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: From cropping to polishing, Subsea Global Solutions delivers precision propeller repairs worldwide, restoring performance and efficiency fast.
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Subsea Global Solutions was tasked with completing a routine propeller polishing and hull inspection for a commercial vessel docked at the Port of Palm Beach. This service, part of the vessel’s ongoing maintenance schedule, ensured optimal performance and efficiency.
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A big thank you to Captain Kate for sharing a behind-the-scenes look at Subsea Global Solutions in action on a propeller polishing project.
View Full Case StudyDiscover how Subsea Global Solutions swiftly resolved propeller damage for a heavy-load carrier in Palm Beach, restoring performance and efficiency with precision repairs.
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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 StudySubsea Global Solutions was engaged to perform an emergency underwater shaft seal repair on a mid-size cruise vessel docked in Eleusis, Greece.
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Faced with a critical shaft seal leak, Subsea Global Solutions performed an afloat repair at the Galveston City Docks—overcoming logistical delays and environmental challenges to restore the vessel without dry docking.
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Subsea Global Solutions was called upon to perform a critical underwater stern seal exchange on a tanker docked in Curacao. Facing significant oil leakage, the client urgently needed a trusted partner with the expertise and resources to complete the repair efficiently, safely, and without disrupting the vessel's schedule.
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Learn how SGS performs stern tube and shaft seal replacements underwater minimizing downtime and avoiding costly drydocking.
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Subsea Global Solutions completed a successful twin shaft seal repair in the South Pacific minimizing downtime with expert underwater solutions.
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Subsea Global Solutions divers performed a stern seal repair on a bulk carrier in Romania, delivering safe, efficient results without drydocking.
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Subsea Global Solutions provides proactive underwater inspection & maintenance programs for offshore oil & gas operators—helping extend asset life, reduce risk & meet class requirements.
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Subsea Global Solutions helps offshore oil & gas operators manage biofouling risks with diver & ROV cleaning, inspections, and regulatory-compliant solutions—boosting efficiency and reducing downtime.
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Subsea Global Solutions delivers rapid, class-approved underwater repairs for the offshore oil & gas industry—reducing downtime and eliminating costly dry-docking. Learn how our global teams support critical assets 24/7.
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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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Class approved shell plate underwater damage repairs to offshore semi-submersible platform without drydocking.
View Full Case StudyDryDock 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 StudyThe 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 StudyDuring cargo operations, a submerged pile pierced through the hull of a tanker. Subsea Global Solutions worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam without the need for costly drydock delays.
View Full Case StudyA Blue-Chip oil & gas company incurred several defects and cracks in a critical attachment member of an FPSO’s hull – Subsea Global Solutions provided these defects the repairs required to allow continued operation.
View Full Case StudyDesign 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 StudyLearn how SGS performs stern tube and shaft seal replacements underwater minimizing downtime and avoiding costly drydocking.
View Full Case StudySubsea Global Solutions completed a successful twin shaft seal repair in the South Pacific minimizing downtime with expert underwater solutions.
View Full Case Study
Subsea Global Solutions conducted a major biofouling cleaning campaign in Korea, improving vessel efficiency and reducing fuel consumption.
View Full Case StudyDryDock 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 StudyThe 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 StudySubsea Global Solutions executes underwater wet welding on a cruise ship, restoring structural strength while minimizing downtime.
View Full Case StudyDiscover how Subsea Global Solutions restored efficiency with underwater propeller blade straightening using cold static loading.
View Full Case StudySubsea Global Solutions completes a complex double bow thruster removal, showcasing expertise in underwater engineering and vessel support.
View Full Case StudySubsea Global Solutions delivers an afloat bow thruster repair, restoring full functionality and minimizing downtime for vessel operators.
View Full Case StudyFollowing contact damage, Subsea Global Solutions delivers expert underwater propeller blade replacement to restore vessel performance quickly.
View Full Case StudyLearn how SGS performs stern tube and shaft seal replacements underwater minimizing downtime and avoiding costly drydocking.
View Full Case Study
Subsea Global Solutions completed a complex aft shaft bearing repair in Hong Kong proving no challenge is too difficult for our underwater repair experts.
View Full Case Study: From cropping to polishing, Subsea Global Solutions delivers precision propeller repairs worldwide, restoring performance and efficiency fast.
View Full Case StudySubsea Global Solutions completed a successful twin shaft seal repair in the South Pacific minimizing downtime with expert underwater solutions.
View Full Case StudySubsea Global Solutions conducted a major biofouling cleaning campaign in Korea, improving vessel efficiency and reducing fuel consumption.
View Full Case StudyDryDock 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 StudySubsea Global Solutions was called to assist a large, fully-laden Post-Panamax container vessel that developed steering gear problems. We quickly resolved the problem and got the ship back on track.
View Full Case StudyThe 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 StudySubsea Global Solutions repairs galvanic corrosion on both PORT and STBD side rudders on a vessel only 3 months out of dry dock.
View Full Case StudySubsea Global Solutions executes underwater wet welding on a cruise ship, restoring structural strength while minimizing downtime.
View Full Case StudyDuring cargo operations, a submerged pile pierced through the hull of a tanker. Subsea Global Solutions worked together with owner and class to develop repair plan that included the design and installation of an engineered cofferdam without the need for costly drydock delays.
View Full Case StudyDiscover how Subsea Global Solutions restored efficiency with underwater propeller blade straightening using cold static loading.
View Full Case StudyDesign 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 a shifted tailshaft afloat and executes a stern seal repair, ensuring vessel reliability without drydock.
View Full Case StudySubsea Global Solutions completes a complex double bow thruster removal, showcasing expertise in underwater engineering and vessel support.
View Full Case StudySubsea Global Solutions delivers an afloat bow thruster repair, restoring full functionality and minimizing downtime for vessel operators.
View Full Case Study
Subsea Global Solutions completes a turnkey SOx scrubber spool pipe replacement with a 5-year coating warranty, ensuring compliance and reliability.
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Subsea Global Solutions executes a precise underwater hull fracture repair near the bilge keel, restoring vessel integrity and safety in Tacoma, Washington.
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Subsea Global Solutions completes a successful afloat rudder seal replacement, providing efficient underwater repair without drydocking delays.
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Subsea Global Solutions repairs and restores a heavily corroded rudder, extending service life and maintaining vessel safety.
View Full Case StudyFollowing contact damage, Subsea Global Solutions delivers expert underwater propeller blade replacement to restore vessel performance quickly.
View Full Case StudyLearn how SGS performs stern tube and shaft seal replacements underwater minimizing downtime and avoiding costly drydocking.
View Full Case StudySubsea Global Solutions completed a complex aft shaft bearing repair in Hong Kong proving no challenge is too difficult for our underwater repair experts.
View Full Case Study: From cropping to polishing, Subsea Global Solutions delivers precision propeller repairs worldwide, restoring performance and efficiency fast.
View Full Case StudySubsea Global Solutions completed a successful twin shaft seal repair in the South Pacific minimizing downtime with expert underwater solutions.
View Full Case StudySubsea Global Solutions divers performed a stern seal repair on a bulk carrier in Romania, delivering safe, efficient results without drydocking.
View Full Case StudySubsea Global Solutions conducted a major biofouling cleaning campaign in Korea, improving vessel efficiency and reducing fuel consumption.
View Full Case StudySubsea Global Solutions divers executed a complex underwater oil leak repair on a ferry in Canada, showcasing precision and compliance in marine repair solutions.
View Full Case StudySubsea Global Solutions completes a marine dredging project to improve mooring access, ensuring safer and more efficient vessel operations.
View Full Case StudyTo learn more about underwater welding at Subsea Global Solutions, review our latest underwater welding case study.
Class approved permanent repair processes are established using underwater wet welding, atmospheric dry welding or hyperbaric dry welding for permanent repairs to incidental hull damage below the water line. With an in-house Engineering department headed by our Senior Welding Engineer, who has decades of welding experience on topside and underwater, Subsea Global Solutions is capable of Structural Engineering and writing repair procedures detailing the welding process and scope of repair to be developed upfront for pre-approval by Head Offices of major Classification Societies or insurance underwriters. Having a pre-approved repair procedure by the Class damage department gives the customer a guarantee that a permanent repair is achieved on time wherever or whenever required.
Welder/Diver technicians are trained, qualified and their qualifications renewed every 2 years in one of the three training tanks at Subsea Global Solutions facilities. All welders WPQR’s are done on Classification Society certified paper to the Class A requirements of AWS D3.6M: Underwater Welding Code.
Subsea Global Solutions is the only diving company globally to have a Workshop Approval for Underwater Welding by DNV.
Subsea Global Solutions designs and manufactures cofferdams of all sizes and configurations. Well versed in the development of flexible as well as rigid hyperbaric (open bottom) or atmospheric cofferdams.
Learn more about Underwater Blankings & Cofferdams
Learn more about Underwater Welding in this Build-up Underwater Welding Repair
Hydroweld FS wet underwater welding electrodes are the result of significant research and development into flux formulations, filler metals and supplementary coatings. They are designed to work in all positions in fresh water, brine or saltwater, and have been used to successfully perform wet weld repairs have been performed to a depth of 300 meters. Their outstanding user-friendly properties and wet welding characteristics, easily produce high quality wet welds to internationally recognized standards. Hydroweld FS is the electrode of choice where high-quality wet welding is required. They have meet the class A requirements of AWS D3.6M for fillet and groove wet welds as has been witnessed by Lloyds Register of Shipping (LR), American Bureau of Shipping (ABS), Det Norske Veritas (DNV), Bureau Veritas (BV), and Rina. Hydroweld FS wet welding electrodes are currently the only wet underwater welding electrodes approved for permanent and temporary repairs on war ships by the British Ministry of Defense (MoD). This was gained after intensive underwater comparability testing and further NDE and destructive testing against all other commercially available wet welding electrodes by the MoD and The Welding Institute (TWI). As a result, the electrodes are now included in the NATO codification system.
To learn more about underwater welding at Subsea Global Solutions, review our latest underwater welding case study.
