DISCOVER Magazine #7

Tideway’s flagship vessel

Published in category: Dredging & Marine Contracting


Undergoes first five-year survey at Damen Shiprepair Amsterdam

Bas Peeters
Vessel Manager

A strong relationship over many years led Tideway to place its flagship vessel in the hands of Damen Shiprepair Amsterdam when it came to her first five-year survey.

Based in Breda in the Netherlands, Tideway is an expert in precision stone dumping, landfall construction, scour protection and pre and post-dredging for the support of pipe laying operations. The company is part of the Belgian dredging, environmental and marine engineering group DEME.

Although Damen works regularly on DEME vessels, each project is assessed separately. Bas Peeters, Vessel Manager at Tideway, says the Group had several offers from competing repair yards for the Flintstone project. He comments: “There were several reasons why we chose Damen and specifically Amsterdam. Of course pricing is important, that was one factor but also we have had a long working relationship with Damen as the DEME Group and have confidence that the job will be performed well.”

In Amsterdam there is still extensive ship repair knowledge available, good machinists etc., he adds. “The guys at Damen Shiprepair Amsterdam are used to working with big lathes, and that is not the case at every yard in the world.”

Supportive & flexible

“They have the skills and the project management team were very supportive and flexible, new challenges were solved quickly and together as one team.”

Another important factor was the location, which made it easier to arrange all the logistics and support form other subcontractors like Huisman and Seatools etc. he adds.

One particularly complex task was the refurbishment of the moonpool doors to prevent leakage. These were lowered and supported on the floor of the drydock in order to undergo extensive maintenance, including the replacement of the main bearings. “This involved a lot of machining and lathing, it was a very tight deadline as well because we knew another ship was arriving.”

The parts were almost one metre in diameter and 2 metres long. “These flat shafts were very big items and had to be re-machined. They are heavy to manipulate and this all takes time.” This also meant Damen Shiprepair Amsterdam needed to source special materials or make them, including shafts and bushings.

Made on site

Another important job was the anchor winches, which had rusted inside so these needed to be overhauled, he says. “This was done in record speed.” It really helped having the yard’s sister company Niron Steel on site, Bas points out. “It was really a great cooperation.”

Other activities included the overhaul of all the thrusters and a wide range of other tasks relating to the water lines, fall pipes, ROV transport and storage, and other equipment.

While in Amsterdam the Huisman crane and tower were overhauled by the manufacturer. The yard provided full support including machining and supplying various components, and provided a berth for the extra time required to complete the project.

Following the work on the crane and tower Flintstone had to be docked one more time and the loading tests were carried out in Amsterdam as well. “We had specially designed weights as we didn’t have a traditional hook and needed dive support to hook up with the test load located underwater in the drydock to perform the load test.”

In addition, the Liebherr excavator’s boom and stick had to be dismantled because there was slightly too much play between the boom and pins. “Here Damen provided support and carried out the welding.”

The understanding from the yard was crucial, Bas stresses. “Everything was done there. Naturally, we wanted to leave as fast as we could to make money from our vessel. Damen always tried to see if we could find a solution together. It was our mutual goal to get the vessel ready as soon as possible. And everything worked out very well. Flintstone went straight to work on a project!”

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