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Displaying items by tag: AtoN

#lighthouses -  Contributory feedback from marine users of navigational aids is been sought from Irish Lights of its Aids to Navigation provision around the coasts of Ireland. 

Every five years, the General Lighthouse Authorities (GLA), comprising Irish Lights, Northern Lighthouse Board and Trinity House in the UK, conduct this review to assess AtoN requirements.

Over time changes can occur which affect Aids to Navigation requirements and their development such as trade patterns, vessel types and volume, the seabed, development of offshore projects or changes in technology. The review will include individual AtoN and systems of AtoN to ensure international standards are met.

All users of marine Aids to Navigation are invited to contribute to the review by commenting on the usefulness and usability of existing AtoN provided by the GLA. Input is particularly welcome on any proposed requirement for the provision of additional AtoN; improvements to the current mix of AtoN; technological developments or additional services. Feedback is also welcomed on Irish Lights data service which provides near real time meteorological information.

Emphasising the critical importance of user input Captain Robert McCabe, Director of Operations and Navigation Services, Irish Lights said, “International standards require average availability ranging from 97 percent to 99.8 percent and Marine Aids to Navigation must serve all users of the sea, from small leisure and fishing craft to large liners and cargo vessels. Input from experienced users is essential to the process of defining the correct mix of Aids to Navigation. Local knowledge and experience built through time at sea cannot be replaced by desktop analysis no matter how modern and sophisticated the tools may be”.

Responses should be submitted before 30th July 2019 by emailing [email protected] or write to Navigation Services, Commissioners of Irish Lights, Harbour Road, Dun Laoghaire, Co. Dublin.

Published in Lighthouses

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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