FOCUS ON BLYTH
FEATURE SPONSOR
5th WAVE CAPTAIN REACHES SIGNIFICANT PROJECT MILESTONE
Alnmaritec, the UK’s premier
designer and builder of aluminium alloy workboats recently turned the hull of ALN 151, a new wind farm support vessel, currently under construction for long-term client NSL (North Sea Logistics).
CONSTRUCTION PROCESS This significant point in the project sees the boat really start to take shape as the wheelhouse is mounted on the hull immediately following the turning operation.
The construction process begins with the erection of a steel building frame or ‘bed’ onto which the main deck plates and frames are laid providing accurate dimensional control.
The main hull frames are then erected from the deck and longitudinal stiffeners fitted before the shell plates are ‘wrapped’ onto the hull. Building the hull upside down ensures that the maximum amount of welding on the structure is completed in the ‘down hand’ position thus increasing the speed and quality of the welding procedure.
Some builders are unable to adopt his approach due to space restrictions but at Alnmaritec this is not an issue and with practised ease the whole turning process only takes around 3-4 hours even for the largest vessels, far less than the amount of time saved during the welding phase.
19M WAVE CAPTAIN The yet to be named boat will be the 5th 19m Wave Captain built by Alnmaritec and the second such vessel for NSL. Alnmaritec Managing Director Chris Millman explains why he thinks these boats are so popular
“The Wave Captain design features the latest high efficiency hull form developed by the Alnmaritec design department with CFD and model testing support. This has led to these boats demonstrating exceptional sea keeping characteristics and superb handling when approaching and pushing up on the wind turbines.”
It’s the design led approach of Alnmaritec that has seen them turn their attention to 24m vessels for the sector, “Clients are increasingly asking us about larger vessels but they want them with multi-purpose functionality, we’ve therefore designed a boat we think fits that purpose superbly.”
INNOVATIVE DESIGN
The 24m boat in question includes some innovative design features, not least of which is the ability to interchange modules in order to facilitate differing functions as Chris explains “the crane on the boat is designed to be able to lift on and off any module the owner requires, whether it’s a dive station, a survey station or extra accommodation.”
Alnmaritec
30
www.windenergynetwork.co.uk
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