Damen crane ship repair job
A Zhenhua Heavy Industries crane ship has left Damen Shiprepair Dunkerque after ten days of maintenance and repairs.
During the work, the 141m, 18,330 DWT crane ship Wei-Li required special dock bed arrangements, not least because of the 3,000 tonne crane mounted on its stern and the vessel’s unconventional hull form.
A total of 225 blocks were required, along with an additional 56 steel pillars of up to 7m in length to support the stern. Wooden wedges also had to be added to the lateral blocks to take account of the unusual hull shape and to ensure complete stability in the drydock.
“Ensuring that the Wei-Li was properly supported in the drydock was a complex project in itself,” commented Khalil Benjelloul, head of marketing and sales at Damen Shiprepair Dunkerque. “With all the blocks and pillars, plus the positions of the vessel’s thrusters, it was not easy to position her in the centre line of the dock.”
The scope of work over the ten day period included, along with the standard work for class survey, blasting and painting the hull and the overhauling of the internal and overboard valves.
Electrical work was extensive given the tight time frame, with a large number of motors removed and transported back to workshop for overhaul before being returned and refitted. The last ones were fitted and tested on the same day of the vessel’s departure.
The starboard propeller blades were also rebuilt. This required re-welding tips onto each of the blades followed by a full polish for both propellers. Six generator coolers were also removed for overhauling, as were their bearings, and some major repairs were made to the accommodation.
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