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#marinewildlife – The Marine Institute has welcomed the recent publication of the "Atlas of the Distribution and Relative Abundance of Marine Mammals in Irish Offshore Waters: 2005-2011", that was launched by Minister for Arts, Heritage and the Gaeltacht, Jimmy Deenihan on board the Irish Whale and Dolphin Group's (IWDG) Research Vessel Celtic Mist, last week (16th July 2013).

The Atlas marks the culmination of six years of surveys involving more than 1,000 days at sea. It contains a detailed analysis of 21 species of porpoises, dolphins, whales and seals in Irish waters showing seasonal and geographic location. The atlas will provide a valuable data source for marine scientists, marine conservationists and the general public with an interest in marine mammals and their protection.

Minister Deenihan commended the work undertaken to produce the atlas, "This fine atlas is the culmination of many years of work by a large number of people and I'm happy to note that it was produced under a project funded over several years by my department in collaboration with the Marine Institute."

Research Vessels Operations Manager at the Marine Institute, Aodhán FitzGerald (a former Round Ireland yacht race winner) commented on the value of using the Marine Institute's research vessels as one of the platforms, stating "Marine observers have been able to join surveys on board the RV Celtic Explorer and the RV Celtic Voyager for many years. These have been on both dedicated mammal observation surveys as well as working a long side other marine scientists during multidisciplinary surveys, which has provided an excellent opportunity for the observers," he said.

The Irish waters are home to a diversity of whales and dolphins, and the information collected is included in Ireland's report to the European Commission on marine mammals conservation as part of our obligations under the European Habitats Directive.

Data presented in the Atlas was collected as part of the following research programmes: Marine Mammals and Megafauna in Irish waters – Behaviour, Distribution and habitat use; Irish Scheme for Cetacean Observation and Public Education (ISCOPE I and II); Cetaceans on the Frontier Surveys 2009 and 2010 (MI Cruise No: CE0914 and CE10009); IWDG Ferry Survey Programme and the IWDG Ship Surveys Programme.

The Atlas of the Distribution and Relative Abundance of Marine Mammals in Irish Offshore Waters: 2005-2011 is available as a PDF (19MB) to download here 

Published in Marine Wildlife
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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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