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Monday, December 3, 2018 

A Hydrex diver/technician team recently carried out an underwater stern tube seal repair on a tanker berthed in Tenerife. The ship was suffering from an oil leak, making an on-site repair necessary.

Using a Hydrex flexible mobdock the team was able to carry out the entire operation on-site and underwater, saving the owner an expensive and time-consuming trip to drydock.

An earlier inspection had revealed that a rope was entangled around the stern tube seal assembly. The rope was removed by the divers during this inspection. Unfortunately the rope had damaged the seals and caused an oil leak. The owner of the tanker asked Hydrex to replace the damaged seals underwater so that he could keep his vessel on schedule.

Once the operation was approved all preparations were handled swiftly and the lightweight equipment was mobilised almost immediately, ready to start the seal replacement when the vessel arrived in Tenerife.

The operation started with a thorough underwater inspection of the stern tube seal assembly and removal of the rope guard. The team then installed the flexible mobdock to allow for work in dry conditions. During the operation the divers removed the three damaged seals and replaced them with new ones. Working together with the OEM allowed Hydrex to provide the customer with original spare parts which guarantees the best quality material. A technician of the seal manufacturer was also present during the operation.

Taking advantage of the Hydrex flexible mobdock technique the men were able to carry out the entire repair on-site and underwater. Because all the required material is ready to be transported at all times, no time is lost making preparations.

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