Category Archives: Interesting Projects

Subsea Global Solutions- Hull Cleaning in Brazil now available

Hull Cleaning EquipmentSubsea Global Solutions is pleased to announce that we are up and running actively providing Hull cleaning and propeller polishing services in Brazil.  Together with our vetted partner in the region, Subsea Global Solutions has invested in the delivery of two Trident V brush carts (advanced hull cleaning systems) and auxiliary equipment together with several double head hydraulic hull cleaning machines and SGS propeller polishing systems. With these systems in Brazil, SGS now offers cost effective hull cleaning and propeller polishing services to all size vessels with any hull coating applied.  With its advanced common rail hydraulic system, the SGS Trident V hull cleaning brush cart is approved for even the most sensitive FRC (friction release coatings) coatings.  As this is a brush cart, it is able to efficiently cover the entire hull surface (vertical sides and flat bottom) efficiently with a wide range of operation.

Trident V with diver-2- rev 2Subsea Global Solutions will provide the technical and administrative oversight to our vetted partner in Brazil.  SGS shall be the contracting entity for all clients and shall provide the quotations, contracts, invoices and reports through our Eastern Region office in Miami Florida.

Services are currently offered only in 3 locations in Brazil in either the inner or outer anchorages.  These locations are: Angra Dos Reis, Itaguai and Rio de Janeiro.  No service can be provided to vessels while alongside when they are doing cargo due to Brazilian Naval regulations. 

Services shall be offered in other Brazilian ports in the coming months once the entire vetted partner’s team is trained on the mobilization and demobilization of the equipment at other locations.

Please contact us at Subsea Global Solutions ( or for a lump sum price quotation and estimated time line for these services.  We look forward to continuing to be your one source for underwater service AND now in Brazil!

Wet Welding Cavitation Erosion- Restoration of Weld Seams

DCIM100GOPRO Cavitation erosion of weld seams in rudders in an inherent problem that plagues vessels around the world.  Prior to now, the only remedy available that was recognized by class societies was to perform a dry atmospheric weld to the affected areas in the dry dock or engage Subsea Global Solutions to perform a dry hyperbaric weld repair based on our existing weld procedures.  As announced earlier this year, Subsea Global Solutions recently gained approval for more wet welding procedures.  Groove weld procedures were approved meeting the Class A requirements of the American Welding Societies specification AWS D3.6M:3010 – Underwater Welding Code.


Weld Seam Cavitation Damage

Weld Seam Cavitation Erosion Damage

Weld seam restored by Wet Welding

Weld seam restored by Wet Welding

Cavitation Erosion Damage restoration with wet welding

Cavitation Erosion Damage restoration with wet welding

Utilizing  the approved procedures, welder divers restored the affected weld seams on rudders on two vessels this past month thus allowing the vessels to remain in service.  One vessel operating in the Cruise Industry and another vessel operating in the Container ship trade experienced considerable erosion of their weld seams in the rudder.  With this excessive erosion, the class societies were forced to put a notation on the rudders and set time table for the execution of repairs in the dry dock.  Since both vessels were far from their next scheduled dry docking period, Subsea Global Solutions was contacted to evaluate in-water options.

Repairs on both vessels were executed while they remained in service.  By performing weld seam restoration with the wet welding process, the vessels could perform cargo operations at the same time that welder divers from Subsea Global Solutions completed the work efficiently without delaying any of the vessel’s schedules.  Over sequential attendances, both repairs were completed to the satisfaction of the attending surveyor.

DCIM100GOPROIn both cases the erosion damage was considerable.  Large sections of weld seam were eroded away in some areas with other smaller pockets of eroded weld seams were found in other locations on the rudder blades.  The weld seams were restored with the parent metal using Hydroweld 3.2 mm mild steel electrodes.  Once welding was completed, magnetic particle Inspections were performed to the restored areas and no linear indications were sighted.

Delivering unrivaled service starts with recognizing the need and adapting to fulfill the work completely, efficiently and cost effectively.  Allowing a class recognized repair to be performed while these vessels remained in service, efficiently reduced the risk profile for class and the vessel owner.

Subsea Global Solutions Is your service partner for all in-water maintenance and repair.  We remain available anywhere, any time.

PRONTO……..-Trident Italia Srl- Open for Business!

SGS-Italy-01Subsea Global Solutions is pleased to announce the opening of our new office in Livorno, Italy.  Trident Italia Srl is a newly formed subsidiary of Trident BV,  Subsea Global Solutions’ European founding member.  With the addition of this new location, Trident BV is able to support the entire portfolio of services supported by Subsea Global Solutions on the Italian peninsula with local resources.

“This new location supports our philosophy to deliver rapid cost effective solutions through unrivaled service.  We are proud to have local Italian presence in our new “fully equipped” home port location.”
 Adrie Huijbregts, Managing Director of Trident BV

Offices are located in Livorno Italy,  and all equipment is mobile and can be easily transported to all suitable ports in Italy for any services in our Subsea Global Solutions portfolio.

Please feel free to contact:

Trident Italia Srl
Via delle Cateratte 84 int 16/17
57122 Livorno

Manager / Administrator: Richard Zoltowski
Phone: +39 05861751922
Fax: +39 05861752148


Drill Rigs and Offshore vessels- Big Thrusters require the Right Solutions!

IMG_1630Subsea Global Solutions has remained very busy in early 2014 supporting several oil and gas clients with inspections, maintenance and thruster exchanges.  Working both in-shore and off-shore, unique underwater solutions were developed for various semi-submersible and crane vessels to safely, efficiently and effectively complete the scope of work.

The exchange of large demountable azimuthing thrusters is a systematic process that involves close coordination between inboard operations, outboard operations and lifting services.  This systematic approach is quite straight forward when performed in-shore in sheltered areas, but when performed almost 100 nautical miles OFFSHORE in the dead of winter, this systematic process takes on a new life of it’s own.  Unique processes with built in redundancy, specialized fit for purpose equipment and a concrete communication plan need to be in place to keep the work moving forward efficiently and safely for all personnel in and out of the water.  Developing a flexible dive plan with built in redundancy at all levels is essential when working in such conditions.  Current, sea state and strong winds made the location challenging especially when rigging 75 ton thrusters into position!  Subsea Maersk Developer- FixedGlobal Solutions provided all dive operation management, personnel and equipment to provide around the clock diving operations from multiple dive platforms both on and off the semi-submersible.  By remaining agile and able to adapt to the ever changing weather conditions, Subsea Global Solutions’ was able to provide continuous support for the thruster exchange process.  This allowed all work to be completed to the full satisfaction of the owner; even after others failed.

Bringing experience and a can-do attitude within the entire organization from top to bottom is what makes Subsea Global Solutions unique when performing these large projects in the Oil and Gas industry.

Demountable Azimuthing thrusterSimultaneously in other parts of the world, Subsea Global Solutions  was servicing two other oil and gas installations.  One Drill Ship required a detailed Underwater Inspection in-Lieu of dry docking (UWILD) for class while the other vessel, a large crane ship, required the exchange of demountable propulsion azimuthing thrusters weighing approximately 60 tons.  Both projects took place in the Caribbean.  Operating efficiently within the time parameters and dive windows in accordance with both vessel operator’s stringent diving regulations has made Subsea Global Solutions the company’s “turn to” resource for all of their diving needs.

The Oil and Gas market is enjoying Subsea Global Solutions’ professionalism from start to finish.  Delivering on its core values of quality and safety, Subsea Global Solutions has demonstrated that Quality Service is “not an Act but a Habit”.  Additionally Subsea Global Solutions has demonstrated that Safety’s the “Golden thread woven into our culture”.   Let us demonstrate all of our core values for you!  We remain available at anytime to develop projects with you.

Stabilizers- When Oil and water Mix- No one is happy!

DSC04105Stabilizers play in an important role on cruise vessels.  They help keep the “cargo” from complaining and help keep the martinis on the table tops as the vessel cruises the high seas.  However, when seals leak on the stabilizers, no one is happy.  While operating in the Mediterranean, a stabilizer on a cruise vessel experienced excessive sea water ingress.  This forced the unit to be taken out of service and housed.  The Lube Oil system was contaminated with sea water causing concerns of mechanical damage to the Stabilizer drive system and concerns of oil release to the environment.  With a full itinerary and no scheduled dry docking on the horizon the client contacted Subsea Global Solutions to evaluate options.

DSC04090Subsea Global Solutions is the leader in the development of flexible Hyperbaric Cofferdams for various applications which require a temporary dry environment formed in a normally wet area of a vessel.  Considering the seal type installed on this stabilizer and to perform a permanent Class and OEM approved repair, a Hyperbaric dry environment needed to be developed so that new seal rings could be installed.  This required Subsea Global Solutions to engineer a flexible Hyperbaric cofferdam that would encapsulate the stabilizer seal pocket.  With in-house engineering staff and specialized 3-D design and modeling software, Subsea Global Solutions engineered the necessary Flexible Hyperbaric cofferdam for this type of application.  Since this repair has never been executed underwater before a proper engineered solution was required.  Subsea Global Solutions together with the stabilizer and seal manufacturer evaluated the technical details of this repair and determined that a safe and DSC04089efficient process of repair could be performed .  Subsea Global Solutions is the preferred and approved underwater service company globally approved by the OEM to bond these seal rings underwater.  With this in mind, a repair procedure was developed together with a detailed time line in order to perform the work without taking the vessel out of service or affecting the vessels itinerary.

In the port prior to the underwater intervention, Subsea Global Solutions loaded all of the gear onboard and set up the gear for the intervention.  With the gear and dive station prepared in advance, immediately upon arrival to the repair port of call, diver technicians entered the water.  Utilizing Subsea Global Solutions‘ “A” class wet welding procedures, all attachment points for the flexible Hyperbaric cofferdam were properly positioned and installed.  Once the flexible Hyperbaric Cofferdam was installed, the diver technicians dewatered the space and went to work in a dry and controlled environment.  The existing seal assembly was disassembled and the problem was immediately identified.  Defective rubber seal rings were removed and brought to the surface for evaluation.  With the problem isolated and new seal rings in hand, Subsea Global Solutions bonded the new seal rings in accordance with the OEM’s approved vulcanizing process.  Utilizing the same bonding equipment, adhesives and process used in the dry dock by the OEM, Subsea Global Solutions performed the work with it’s factory trained and certified OEM diver technicians, Subsea Global Solutions completed the work without delay or schedule changes for the client.  This repair was performed in accordance with the OEM’s approved process and received Class’ approval as the repair being considered permanent.

DSC04099Start to finish, the team performed the entire seal renewal in less than the thirty (30) hour port stay of the vessel.  This allowed the vessel to remain in service and not be delayed on it’s cruise.  With the stabilizer back in service, the cargo could enjoy a nice smooth ride and the martinis stayed put!  Making the impossible possible is what Subsea Global Solutions is all about.  We remain on the forefront of developing new repair alternatives.  Bring your problem to us and let’s see what we can develop for you!

What No Cofferdam?- Class approved Underwater Wet Welded Groove Welds

DIGITAL IMAGESubsea Global Solutions is proud to announce that it has recently qualified more underwater wet welding procedures.  Subsea Global Solutions has qualified procedures for groove welds, meeting the Class A requirements of the American Welding Societies specification AWS D3.6M:3010 – Underwater Welding Code. The welding of the test plates was witnessed by Lloyd’s Register, who also issued the certificates approving the procedures. At the same time Subsea Global Solutions qualified 8 welder divers to the groove welding procedures.  Subsea Global Solutions continues to lead the way in the industry by qualifying it’s personnel and processes to these stringent wet welding requirements.  These additional procedures are added to our already existing Class approved Class “A” fillet wet welding procedures.

OLYMPUS DIGITAL CAMERAClass A wet welds meet the visual acceptance criteria, Non-Destructive Evaluation (NDE), and are comparable in regards to the mechanical properties as to welding performed top side under dry conditions.  This is the highest quality wet welding available today in the industry.


OLYMPUS DIGITAL CAMERASeveral test plates were welded in Subsea Global Solution’s training center located in Miami, Florida, USA by welder divers from all Subsea Global Solution’s member companies Parker Diving Service, Miami Diver LLC and Trident BV.



DSCN1321 - CopyAdding these class approved procedures to our service portfolio allows us to remain the trusted resource to deliver unrivaled service.  With these approvals in hand Subsea Global Solutions can perform more complex and challenging underwater wet weld repairs with class supervision.  Send us your inquiry and we can prepare a repair procedure for class consideration.  We remain available to evaluate the options available for your vessels.  Please feel free to contact us with questions on how this could apply to you.

Tunnel Thrusters out; Tunnel Thrusters in…. All in a days work

DSC03199Over the past month Subsea Global Solutions has been the company of choice for several vessel operators to perform tunnel thruster exchanges and repairs on their vessels around the world.   Two (2) in-place tunnel thruster repairs were performed in central Europe and two (2) tunnel thruster exchanges were also performed in Europe.  In addition to these four (4) tunnel thruster repairs in Europe, two (2) tunnel thruster exchanges were performed on cruise vessels remaining in service in the Caribbean.  Utilizing a proven process that consistently delivers top quality and on-time completion performance Subsea Global Solutions remains on the fore-front of the performance of these types of repairs.

SSA Flexible cofferdamDuring the execution of the repair services on these Tunnel Thrusters, Subsea Global Solutions’ team of Diver / Technicians utilized our flexible door system to create a dry hyperbaric environment in the tunnel thruster tunnel in order to execute Class and Original Equipment Manufacturer approved repairs.  This safe and efficient process allows our Diver / Technicians to perform the work in a clean and controlled environment completely underwater without trimming of the vessel.  In fact, all work was performed while cargo operations was taking place; thus avoiding any off-hire or schedule delays for the vessels.  Being the diving contractor for the Original Equipment Manufacturer in these cases, the work was completed with a fully backed OEM warranty.  As the trusted resource for underwater services, Subsea Global Solutions delivered a fully warranted repair on time without issues or delays.

DCIM100GOPRODuring the execution of the tunnel thruster exchanges, Subsea Global Solutions’ teams of experts utilized one of two methods during the tunnel thruster exchange; a dry hyperbaric method or a wet method of tunnel thruster exchange.  The dry hyperbaric method included the use of Subsea Global Solutions’ flexible dry doors in order to create a dry hyperbaric environment to demount the tunnel thruster lower gear box.  The wet method of tunnel thruster exchange included the use of DCIM100GOPROan OEM patented tool that was created together with Subsea Global Solutions as part of our OEM partnership.  Both methods of tunnel thruster exchange were performed over multiple port stays in order to ensure the work could be completed without delays or taking the vessel out of service.

From planning to execution and finally to reporting, Subsea Global Solutions demonstrated its commitment to quality and service.   We will deliver unrivaled service.  We remain available to support your needs at any time, anywhere around the world.  Please feel free to contact us if you require our support.



Our German agent: Germania Shipyard Agency

Germania Shipyard Agency is located in the beautiful city of Hamburg in northern Germany. This agency has been working with Subsea Global Solutions since 2008 and represents us in Germany. After 5 years of cooperation Germania Shipyard Agency is happy to say that Subsea Global Solutions fully meets their expectations. At the moment Germania Shipyard Agency represent over 25 of the leading ship repair and new building Shipyards as well as several experienced afloat workshops all around the World. So you can really say that their main business is in Ship repair.

SONY DSCSONY DSCSONY DSCSONY DSCThe team includes two experienced sales representatives, one secretary and one person for the accounting. To expand the services and to obtain their quality they employed already another person for field works who will start soon.

In the German market the shipping community is mainly represented by medium sized family owned companies, besides the two famous liner companies Hapag Lloyd and Hamburg Süd. The German owners impressively operate the largest container fleet in the world, reflecting approximately 70% of all containerships. In the time frame 2000-2008 this fleet showed an expansion in large-size container vessels. This development gave the owners more and more problems in finding suitable repair locations to service these new large vessels. This pushed Germania Shipyard Agency to look for new ways in ship repair. Hence, in 2008 they took the chance to represent Subsea Solution Alliance, which is nowadays Subsea Global Solutions. This new cooperation was quite important for them as they saw a big potential in under water services. Subsea Global Solutions turned out to be a strong and competitive partner, with experienced staff and makers’ approvals. Under water services turned out to be a great alternative for dry docking especially by saving time and cost.

Throughout the year Germania Shipyard Agency organizes several events for greater customer relationship including their famous Alster-Lake-tour and a nice golf tournament. For sure the most important event is the SMM, the biggest shipping show in the world with 60,000 visitors. SMM SONY DSCtakes place every two years in Hamburg, the home town of Germania Shipyard Agency. Since several years they have been able to build the biggest booth on the show with 300 m2. There the participants have the opportunity to meet customers not only from Germany but from all over the world. Germania Shipyard Agency together with Subsea Global Solutions are already looking forward to welcome you in 2014 not only as business partners but also as friends.

When others can’t- We can!- Underwater Shaft seal replacement

DSC02693More and more debris is being found in our oceans throughout the world.  This debris includes large masses of fishing line and net.  While transiting the southwestern USA, a cargo vessel began experience excessive sea water ingress on the aft shaft seal.  Thinking it was a simple matter of just cutting away some fishing line, the ship manager contracted the work with a local dive company to inspect the stern tube and remove the fishing line.  In the process of fish line removal it was confirmed that some of the mono-filament fishing line was sucked into the lip seal arrangement.  Through the extraction process further damage to the seal arrangement occurred.  With the job exceeding the capabilities of the dive contractor on site, Subsea Global Solutions was called in to perform a permanent repair to the at shaft seal.  Within 16 hours of being initially notified by the ship manager that our services were required, Subsea Global Solutions mobilized all of the necessary equipment and personnel to perform this aft shaft seal repair in less than 48 hours.

DSC01708With the rope guard already removed, Subsea Global Solutions installed the Transhab flexible hyperbaric cofferdam over the affected area of the vessel.  With the critical area of the stern tube dry and in a climate controlled environment, Diver / Technicians entered the Transhab and fully assessed the aft shaft seal system.  With Original Equipment Manufacturer factory training and certification from the manufacturer of the seal system, the Diver / Technicians began a class approved and OEM warranted repair.  All lip rings were properly disassembled.  The seal housings were evaluated, overhauled and prepared for re-installation.  The shaft seal liner was inspected, grooving measured and evaluated.  It was determined that the existing liner was within factory specifications so replacement or removal of the spacer plate and or liner was not required.  If required, the seal shaft seal spacer plate or shaft liner could have been removed and or replaced in a completely dry environment in the TransHab flexible hyperbaric cofferdam utilized by Subsea Global Solutions.

With all critical components measured and cleaned, the Diver / Technicians performed the new lip ring bonding process.  Utilizing the same process, same jigs, and glues utilized by factory approved technicians performing the work in the dry dock, the Diver / Technicians completed the most critical part of the shaft seal replacement.  Once the seal assembly was completely assembled, the Diver / Technicians performed factory required feeler gauge tests and pressure tests.  All pressure tests and mechanical inspections were performed to the full satisfaction of the attending ship manager and class surveyor.

In less than 43 hours, Subsea Global Solutions came and went.  We are your trusted resource to deliver unrivaled service.  The Ship Manager was excited to see the stern lights go over the horizon without any notations or open class items.  Subsea Global Solutions is your trusted resource to keep your vessels in service.  One world, One Ocean; Subsea Global Solutions is your underwater contractor any where around the world.