Worldwide Underwater Repair Capability Proven Off The Coast Of Congo

Shipping operates on a global scale, and when damage occurs, shipowners need repair partners who can respond just as globally. In December, we once again demonstrated our ability to mobilize anywhere in the world, carrying out a complex underwater propeller repair on a container vessel at anchorage off Pointe Noire, Republic of Congo.

Following reports of a possible grounding incident, an underwater inspection revealed deformation to all six blades of the vessel’s fixed-pitch propeller. With no immediate access to drydock facilities in the region and schedule commitments to maintain, we were contacted to assess and resolve the situation on-site.

Rapid mobilization in a remote location

Operating far from major ship repair hubs requires careful planning and reliable logistics. We deployed one of our specialized diving team and equipment to Pointe Noire on short notice. As the vessel remained at anchorage, a dedicated workboat was mobilized to provide safe offshore access and enable the repair without delay.

Upon arrival, our divers conducted a detailed underwater inspection, confirming that all six propeller blades were bent towards the aft side. The bends were too severe to permit bending back to shape with our cold straightening equipment and therefore the blades needed to be cropped. Precise measurements were taken on each blade to assess the extent of deformation and determine the most effective corrective action.

Engineering solutions with class involvement

In close consultation with the attending class surveyor, we proposed a repair plan tailored to the ship’s condition and schedule. To restore balance and ensure reliable propulsion, it was agreed that all six blades would be cropped to identical dimensions.

The underwater cropping was carried out according to the approved plan. The length of the cuts was approximately 127 cm, and the blades were very thick at this point. The cropping was followed by careful rounding and polishing of all edges. This ensured smooth hydrodynamic performance and reduced the risk of vibration or cavitation, all without requiring drydock facilities.

Added value through on-site operation

While on-site, our team also carried out an additional underwater inspection of the rudder at the request of the vessel’s crew. The inspection confirmed that no grounding-related damage was present, providing immediate reassurance that the ship could sail and steer safely. After sailing, the captain contacted our team leader to confirm that all was well and there was no sign of vibration from the propeller.

One partner, anywhere in the world

By completing this repair at anchorage and far from any traditional repair infrastructure, we enabled the vessel to continue operations safely and efficiently. The project highlights Hydrex’s ability to support shipowners worldwide. We deliver class-approved underwater repairs wherever vessels operate, from major ports to remote anchorages.

With globally deployable teams, specialized equipment, and decades of experience, we provide shipowners with dependable solutions when and where they are most needed.

Press Release