Author Archives: Subsea Global Solutions

Holes in the Hull- Temporary Shell plate Repairs- Jan 2017

While operating in the Caribbean a vessel became aware that they were getting water ingress into one of the void tanks under the main propeller shaft. Subsea Global Solutions was contacted and after a discussion with the class surveyor, vessel management and Subsea Global Solutions engineering staff, it was decided to install a welded doubler plate to cover the breach in the hull during one of the vessels regular port calls. Subsea Global Solutions mobilized a crew to perform Ultrasonic thickness readings to gauge the integrity of the hull plating. Measurements were taken and the plate was fabricated.

Work began on the damaged area of the shell plate and a two-part marine epoxy was applied to seal the hole. The surrounding area was cleaned and prepped so the doubler plate could be installed. The doubler plate was fully welded using a multi-pass fillet weld. The process used by Subsea Global Solutions’ welder / divers is a Class society approved, AWS Class “A” weld.  By utilizing this multi-bead process our welder / divers are able to achieve weld qualities with metallurgical properties consistently found in high class top side welds.  Upon completion of the welding, all the welds and the heat affected parent metal was properly coated with an underwater epoxy.

The vessel sailed into the sunset safe and secure.  Delivering unrivaled in-water service at a moments notice is what Subsea Global Solutions is all about.  We are the GLOBAL RESOURCE to turn to for your in-service underwater maintenance and repairs. We remain available to support your needs anywhere and at any time.

We got a leak!- Shaft Seal Emergency Repair- Dec 2016

Following a scheduled dry docking event a vessel departed from the shipyard only to discover that there was a leaking shaft seal.
With the vessel going directly into service an in-service repair solution was required in order to keep the vessel afloat.  The client and the Service Provider that initially performed the work in dry dock contacted Subsea Global Solutions to evaluate in-service repair options.  After an inspection was performed in the initial port of entry it was determined that the seal assembly would require an in-service inspection and repair.  Preparations were made to gain access to the seal assembly.  The rope guard was gouged away with Subsea Global Solutions’ specialized Hydro-gouging system.  This allowed the welder / divers to gouge away the weld and leave the base material intact thus allowing the rope guard to be easily installed after the work was completed.

While the vessel transited to its next port of call, Subsea Global Solutions mobilized their dive support vessel “She Devil” to meet the vessel for repair in the lower Caribbean.  Upon the arrival of the damaged vessel, the team immediately began the installation of  Subsea Global Solutions’ TransHab- Flexible Hyperbaric Cofferdam to create a dry environment around the seal assembly.  Once installed certified seal / Diver-Technicians entered the Cofferdam and quickly determined the problem with the seal assembly.  The seal rings were renewed through a certified bonding process and the system was reassembled.  After two (2) working shifts, no leaks were reported and the Transhab Flexible Cofferdam was removed from the vessel so that it could continue on its voyage.


The Delivery of Unrivaled Service is what makes Subsea Global Solutions the leading underwater service provider.  We remain available at any time to support your inspection, maintenance needs or emergency repair needs globally.  One call and that’s all!

California Lands Commission- Prevention First Conference 2016


Every two years the California State Lands Commission presents its Prevention First symposium. Prevention First is an onshore and offshore pollution prevention symposium and technology exhibition. Experts and professionals from academia, industry, and government from around the country gather at this important event to share information and introduce concepts in pollution prevention with a focus on marine invasive species management, environmental protection, marine oil terminal engineering and maintenance standards, pipeline safety, risk analysis, many other areas involving maritime safety and pollution prevention.

Subsea Global Solutions is well represented and we look forward to you visit us!

SGS US East and SGS Caribbean- Propeller Repairs- Aug 2016

Controllable Pitch Propeller Blade Seal Replacement

Picture1 While operating in the pristine waters of the Caribbean, a commercial vessel began to lose oil from it’s controllable pitch propeller system (CPP).  As the vessel neared the Panama Canal the vessel’s management contacted Subsea Global Solutions (SGS) to investigate and potentially repair the problem while the vessel laid fully loaded in an anchorage awaiting the canal passage.

Upon notification of this emergency, diver / technicians were dispatched to Panama to work together with SGS’s local resources in the area.  Upon arrival, gear was loaded and prepared onboard a suitable workboat for working in the outer anchorage.  Upon arrival to the vessel a survey of the CPP system, shaft seal and aft section of the vessel was conducted.  It was determined that one of the CPP propeller blades was leaking due to a damaged seal.

Picture13As the client had spare parts onboard AND SGS arrived to the vessel with all necessary gear to perform an in-water exchange of the propeller blade seal, a repair immediately begun.  Internal preparations were made on the vessel to avoid any further loss of oil AND to prevent seawater ingress into the propeller hub.  The propeller blade was lowered efficiently using techniques and specialized tooling developed by SGS for this specialized type of repair.  The blade seal was efficiently replaced, blade reinstalled and system tested.

With the leak repaired, the vessel was returned to service WITHOUT being taken off-hire.  The efficient solution provided by Subsea Global Solutions while the vessel waited in the anchorage for canal passage was invaluable to the client.

Keeping ships in service and assuring environmentally friendly solutions, Subsea Global Solutions is your trusted partner to deliver unrivaled service.

SGS US West- Tunnel Thruster repairs- 2016

vlcsnap-2014-08-15-11h14m44s209Tunnel thrusters are critical pieces of equipment that are integral to the maneuvering process.  When a unit is out of service operators incur excessive costs and their risk profile’s increase through the use of Tugs.  Subsea Global Solutions provides an OEM and class approved repair while keep the vessel loaded at stable draft and in a position where cargo operations can be conducted.

A tunnel thruster manufacturer contacted SGS US West as they required a warranty inspection and repair be executed on a tunnel thruster on a container ship.  Within hours of arrival, the source of the problem was identified.  Additional team members mobilized to the location, installed hyperbaric doors on either side of the tunnel thruster to create a dry environment for a permanent repair to be executed.

Another tunnel thruster successfully repaired and another client continuing their shipping voyage with no delay or risk of tunnel thruster failure!  Subsea Global Solutions your trusted partner delivering time and time again!

SGS US East, SGS US West and SGS Caribbean- Shaft Seal Repairs- May 2016

DSC02693Subsea Global Solutions has been very busy in all of their locations globally.  During the past two week the Diver / Technicians performed 5 underwater shaft seal repairs globally.  Three seals were serviced in the Caribbean, one was serviced in the Gulf of Mexico and the final seal was serviced on the West Coast of the USA.  Most of these repairs consisted of the use of the companies TransHab flexible Hyperbaric cofferdam system.  Utilizing OEM approved methods of repair combined with factory trained Diver / technicians, Subsea Global Solutions was able to SGS Inside Habitat-May 2016provide ALL of these clients OEM and Class approved repairs while they remained loaded and in service!

Subsea Global Solutions delivering unrivaled service globally.  We are your underwater service partner trusted with your valuable assets.

Call today- we serve tomorrow!

OLYMPUS DIGITAL CAMERASubsea Global Solutions responded quickly to a vessel in need of a shaft seal repair.  The team was called into action with only 1 day  to pack up gear and prepare to begin work 1/2 way across the country.  Personnel were deployed from all of our offices in the USA and, Caribbean to respond quickly and efficiently to this vessel in need.  Working around the clock the shaft seal assembly was completely exchanged in 5 working shifts.   Utilizing our TransHab Flexible Hyperbaric cofferdam, all the lip rings were efficiently and properly replaced with a factory warranted process.  By Stuyvesant-Seal repair-3maintaining diver / seal technicians certified in this type of shaft seal repair, Subsea Global Solutions can provide a fully warranted repair.

Subsea Global Solutions is your turn to resource to deliver in and out of the water!  When you vessel depends on quality service there is only one underwater service provider to rely on.  Thank you to all of our loyal and dedicated clients globally!

SGS INNOVATION- Making the Impossible- POSSIBLE!

Subsea Global Solutions was the resource hired to develop an innovative solution for the extraction of retractable azimuthing thrusters in a VERY shall environment.  This project required several phases using a purpose designed and built hydraulic jacking system to demount and exchange these thrusters.  The Azimuthing thrusters were the propulsion system on a specialty vessel which were not originally designed for underwater demounting.  Due to the strategic nature of this vessel and its home port location a unique solution was required.

Teams from our SGS East and West Coast offices participated in this ground breaking azimuthing thruster exchange with the Original Equipment Manufacturer.  Since this thruster was not designed for underwater demounting and the location was sensitive and shallow, the innovative tension leg track system was employed in this case to demount the lower gear boxes for overhaul and repair.

Subsea Global Solutions is your resource for unrivaled service.  Driven by our core values, we make the impossible POSSIBLE each and every day.