Class approved shell plate underwater damage repairs to offshore semi-submersible platform without drydocking.

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.

3 month out of dry dock, galvanic corrosion caused heavy cavitation/erosion damage on PORT and STBD side rudders.

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.

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.

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.

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.

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.

3 month out of dry dock, galvanic corrosion caused heavy cavitation/erosion damage on PORT and STBD side rudders.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Class approved shell plate underwater damage repairs to offshore semi-submersible platform without drydocking.