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FSU Spacer Pontoons

Lift out and dry store vessels, carrying out comprehensive refurbishments and re-fit of stainless steel hydraulic pin locking systems. All necessary metalwork completed, and marine-grade paint systems applied throughout to ensure long-lasting performance in harsh environments.
  • 5 Vessels refurbed
  • 98ton lift
  • Technical hydraulic systems installed

Client

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Location

Portsmouth

Overview

Our client utilises spacer pontoon vessels as a secondary berthing solution for large aircraft carriers, accommodating their substantial size within Portsmouth Harbour. The client operates a fleet of five such vessels, enabling the safe and efficient berthing of Naval ships.
Our scope of works involved the refurbishment, repair and renewal of the hydraulic quayside connection systems, restoring full operational reliability and ensuring continued safe interface between the pontoons and shore infrastructure.
Our task was to refurbish, repair and re-new hydralic quay side connection systems.

The Challenge

To undertake a comprehensive repair and refurbishment programme, the pontoons were lifted out of the water to allow full access for underside inspection, preparation and the application of protective coating systems.

The existing hydraulic systems were heavily corroded, exposed to the elements and no longer operational. A full overhaul was therefore required to restore functionality, improve durability and ensure long-term reliability in the harsh marine environment.

Solution

Each 98-tonne pontoon was carefully lifted from the water and positioned within our compound on purpose-built pedestals, providing safe and unrestricted access to the underside for cleaning, preparation and coating applications. The refurbishment programme was delivered in phases, with one pontoon completed every three to four months to maintain operational continuity.

We designed and installed new stainless steel hydraulic systems complete with integrated containment measures, ensuring enhanced durability and environmental protection. In addition, the large stainless steel linkage rods were fully refurbished, restoring performance and extending the service life of the assemblies.

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