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Displaying items by tag: Most powerful wind blades

#MostPowerful - The world’s most powerful wind turbine blades continue to ‘breeze’ into Belfast Harbour, as part of a project to develop the Burbo 2 offshore wind farm on the Irish Sea as previously reported on Afloat. The blades – plus their 88m high towers are visible from across much of the city.

The first six massive 80m long blades – the equivalent length of nine double decker London buses – have arrived in Belfast Harbour’s offshore wind terminal from the Isle of Wight. The completed wind farm will provide enough renewable electricity for 230,000 homes.

Each blade weighs 35 tonnes and the turbines, which will be assembled in Belfast Harbour, will ‘sweep’ an area larger than the London Eye (21,124 sq m). During this phase of the project, 32 turbines will be assembled in Belfast. The blades are manufactured in the UK by MHI Vestas Offshore Wind.

After the turbines are assembled in Belfast they will be transported on a state-of-the-art jack up vessel which will install them on the seabed, just off the coast of Liverpool. The wind farm will cover 40km2, the same area of almost 6,000 Premiership football pitches.

Once operational, the tip height of the blade and turbine will be almost 200m. The record level of energy produced from just one turbine in a 24-hr period is 192 MWh – the same amount of energy produced by 22,600 litres of oil.

The blades, which were designed, tested and manufactured at the MHI Vestas on the Isle of Wight, will be the first UK built blades to be installed at a British offshore wind power plant.

Published in Power From the Sea

The Half Ton Class was created by the Offshore Racing Council for boats within the racing band not exceeding 22'-0". The ORC decided that the rule should "....permit the development of seaworthy offshore racing yachts...The Council will endeavour to protect the majority of the existing IOR fleet from rapid obsolescence caused by ....developments which produce increased performance without corresponding changes in ratings..."

When first introduced the IOR rule was perfectly adequate for rating boats in existence at that time. However yacht designers naturally examined the rule to seize upon any advantage they could find, the most noticeable of which has been a reduction in displacement and a return to fractional rigs.

After 1993, when the IOR Mk.III rule reached it termination due to lack of people building new boats, the rule was replaced by the CHS (Channel) Handicap system which in turn developed into the IRC system now used.

The IRC handicap system operates by a secret formula which tries to develop boats which are 'Cruising type' of relatively heavy boats with good internal accommodation. It tends to penalise boats with excessive stability or excessive sail area.

Competitions

The most significant events for the Half Ton Class has been the annual Half Ton Cup which was sailed under the IOR rules until 1993. More recently this has been replaced with the Half Ton Classics Cup. The venue of the event moved from continent to continent with over-representation on French or British ports. In later years the event is held biennially. Initially, it was proposed to hold events in Ireland, Britain and France by rotation. However, it was the Belgians who took the ball and ran with it. The Class is now managed from Belgium. 

At A Glance – Half Ton Classics Cup Winners

  • 2017 – Kinsale – Swuzzlebubble – Phil Plumtree – Farr 1977
  • 2016 – Falmouth – Swuzzlebubble – Greg Peck – Farr 1977
  • 2015 – Nieuwport – Checkmate XV – David Cullen – Humphreys 1985
  • 2014 – St Quay Portrieux – Swuzzlebubble – Peter Morton – Farr 1977
  • 2013 – Boulogne – Checkmate XV – Nigel Biggs – Humphreys 1985
  • 2011 – Cowes – Chimp – Michael Kershaw – Berret 1978
  • 2009 – Nieuwpoort – Général Tapioca – Philippe Pilate – Berret 1978
  • 2007 – Dun Laoghaire – Henri-Lloyd Harmony – Nigel Biggs – Humphreys 1980~
  • 2005 – Dinard – Gingko – Patrick Lobrichon – Mauric 1968
  • 2003 – Nieuwpoort – Général Tapioca – Philippe Pilate – Berret 1978

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