Wilhelmsen gets the whole packet In-depth | SHIPBUILDING
Wilhelmsen Marine Engineering has been awarded the €3.8 million contract to supply the complete electrical package for two bitumen carriers.
C
hinese shipyard Wuhan Nanhua Huanggang Jiangbei Shipyard Co. Ltd has awarded Wilhelmsen
Marine Engineering the complete electrical package for two bitumen carriers that are owned by Swedish shipowner Nynäs/Frederiet. Construction of the first of the
FKAB-designed carriers is already underway at the Jiangbei shipyard; with both due for delivery in 2010. Te vessels will be an overall length of
99.9m and a moulded breadth of 15.86m with deadweight of 4700tonnes. The contract will be to supply
electrical equipment and systems such as automation, switchboards and safety systems, as well as the complete electrical design and engineering assignment onboard the vessels and will be managed by Wilhelmsen Callenberg AB a subsidiary of Wilhelmsen Marine Engineering. As the vessel will be carrying cargo
of temperatures up to 250ºC the tanks have been designed with this in mind. To handle this type of cargo, special design considerations for thermal expansion tanks and pipes have been put in place. Te tanks onboard the vessels consist of two tank blocks with four tanks in each. Te tank blocks are fixed in the middle, which allows for expansion longitudinally
TECHNICAL PARTICULARS FKAB Bitumen tanker
Length,oa............................................99.9m Length,bp...............................................96m Breadth mld ......................................15.86m Depth mld ................................................9m Draught design........................................6m Draught santling ...................................5.5m Deadweight at design draught ........................4700tonnes
Speed ............................................... 14knots Cargo capacity................................4300m³ HFO tanks ............................................350m³ DO tanks................................................75m³
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FKAB’s Bitumen tanker design that will be installed with Wilhelmsen Marine Engineering’s complete electrical package.
and each cargo tank block has its own pump room. Per-Erik Larrson, sales manager,
Wilhelmsen Callenbrg AB commented on applying the package to the vessels: “Te vessels are rather advanced with a high level of integration and the challenge is coordination between various system suppliers and technical solutions.” Carrying such high temperature cargo will mean that the equipment on deck will need to have specific requirements. The two vessels that are to be
constructed at Wuhan Nanhua Huanggang Jiangbei Shipyard Co. Ltd will present other challenges to FKAB such as the size of the vessels, as Claes Claeson, managing director, FKAB commented: “Small ships are not easy – there is no space”, as smaller vessels are now starting to be more in demand due to their flexibility of size. To make the most of the space that FKAB have to work with, the vessels will have corrugated vertical bulk heads as this will also generate space outside of the tanks as well. Te reason for the vessels being smaller is that restrictions of deadweight and space requirements at ports have been
the focus of the design of these vessels. Along with the bulk heads the vessels will have a full body and the general internal design of the cargo, engine and accommodation space has been designed for meeting the requirements for the correct deadweight. The vessels will also be fitted with
shore connections, allowing them to turn off the engines and run from shore power, more commonly known as “cold ironing”. With this facility the vessels will cut emissions in port as well as saving fuel. All the systems onboard the vessels will have back up generators to supply them, including the HVAC system that will also be installed onboard both vessels. Te vessel’s power management system, which will be installed also by Wilhelmsen Callenberg AB, will start the emergency generators should there be a power failure for the shore side supply. Wilhelmsen is hoping to install more
of its HVAC solutions in more newbuild vessels in the future; with newbuilds becoming better designed the systems should be able to be integrated into a vessel more easily, with full training being supplied for the
system.NA
The Naval Architect February 2009
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