Recently we assisted the Danish ferry “Margrete Læsø” that suffered an unfortunate grounding while approaching the port causing damages to the SB propeller shaft and propeller blades.
Luckily, the ferry was able to sail to a Danish shipyard, who was able to take in this urgent repair. Using our own truck the Ø490/214 x 12705 mm long SB propeller shaft together with the pull rod were picked up on a Sunday evening wasting no repair time.
The worst bent on the propeller shaft was measured to 18 mm and after cold straightening it was back to 0.02 mm straightness.
Before returning to the Shipyard a final inspection, run-out and permanent approval of the propeller shaft and pull rod were carried out by BV surveyor.
Meanwhile, the ferry “Ane Læsø” has been taking over for “Margrete Læsø”. “This ferry is smaller with less capacity and extra night departures have been necessary”, tells Allan Hjortnæs Pedersen from the ferry company – “so everybody are glad to see Margrete Læsø back in operation”
Repair for the Danish navy vessel L17 Esbern Snare
During a scheduled docking at a Danish shipyard it was clear that both SB og PS propeller shafts measuring Ø880/385 x 21140 mm needed repair due to wear on bearing journals and further both shafts needed cold straightening.
For the repair of the bearing journals, we used our welding technique - laser cladding - applying Inconel 625.
Using laser cladding the heat input is only 1/10 compared to regular welding and this saves delivery time as the post weld heat treatment can be left out.
VIDEO: Laser cladding of the bearing journals
Limescale build-up can block the entire toilet system
For any vessel and especially a fully booked ferry/cruise vessel a blocked toilet is an unwelcome situation.
Even when using limescale build up prevention products the scaling can over time cause blockage of free flow through the system.
We have the equipment that easily takes care of the problem. During the cleaning process the system has to be closed, so even though the service can be carried out during operation it is most easily done during scheduled docking.
Our purpose-built equipment has been sent to locations world-wide, earlier this year to Dubai, where we carried out service for a Danish Container Shipping Company and in March we carried out cleaning of the vacuum toilet system onboard the hybrid ferry MF Schleswig-Holstein during docking in Sweden.
“This cleaning method is a very effective way to remove limescale build-up, and we have used MarineShaft for this service many times on board our Danish and German Scandlines hybrid ferries” says purchaser Carsten Didriksen from Scandlines Danmark.
This week we carry out cleaning of the vacuum toilet system for the Swedish ferry “Stena Jutlantica” during its docking at a Danish Shipyard.
We are looking forward to participating at Norshipping in Oslo next month. Hope to see you at this Exhibition. Should you need a ticked you are most welcome to contact me.
I am so happy to tell you that our new website has been released – we hope you will find it more user-friendly and informative. Should you have any requests or comments concerning our website please do not hesitate to contact me. Take a look.
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Many more exciting jobs in the workshop right now and I look forward to sharing the
next newsletter with you.