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Displaying items by tag: Earthquake

#Tsunami - New Zealand authorities have urged people in low-lying coastal areas to reach higher ground after a tsunami was trigged by a 7.5 magnitude earthquake and a series of strong aftershocks in the country’s South Island.

No injuries have been recorded thus far amid reports of widespread damage after the earthquake and this morning (Sunday 13 November) around 11am Irish time, according to RTÉ News.

TVNZ reports that tsunami waves up to one metre have been noted in Christchurch, some 90km south of the earthquake’s epicentre, as residents in Wellington, on the southern end of North Island, are urged to evacuate.

Published in News Update

#Earthquake - Just a few weeks after the Bristol Channel was stirred up by a 4.1 magnitude earthquake, TheJournal.ie reports of tremors felt in Ireland's south-east yesterday evening (18 March).

No damage has been reported on the relatively minor quake, the magnitude of which is awaiting confirmation from Irish seismologists.

But the tectonic trembling was felt in many parts of Wexford, and detected as far away as Wales across the Irish Sea.

That may put offshore sailors on alert over the coming weeks, following as it did not long after the Bristol Channel quake, not to mention a 2.6 magnitude rumble off the Cork coast late last year.

TheJournal.ie has more on the story HERE, including a link to a questionnaire for anyone who believes they felt last night's quake.

Published in News Update
Tagged under

#Offshore - Offshore sailors had best beware of some unusual tectonic activity between Britain and Ireland as of late, with the Bristol Channel experiencing its largest ever earthquake last month.

According to Met Éireann, the 4.1 magnitude quake on 20 February had an epicentre between Ilfracombe in Devon and Swansea in South Wales, and could be felt more than 200km away as far east as Guilford in Surrey.

"Most people described the shaking strength of the earthquake to be either weak or moderate, with mainly a trembling effect," said Met Éireann, "whilst others described the effect as swaying or jerky" and many reported rattling windows and shaking crockery.

There are as far no reports that the quake was felt across the Irish Sea here in Ireland, but experts will be vigilant for any further trembles beneath the waves...

Published in Offshore
Tagged under

#EARTHQUAKE - The North West region experienced its biggest ever earthquake this week in an event that poses “very interesting questions for geologists”.

The magnitude 4 quake on the morning of Wednesday 6 June, which was epicentred close to the Corrib Gas Field off the coast of Co Mayo, resulted in tremors felt from Sligo to Galway and numerous reports of houses shaking, as The Irish Times reports.

Minister for Energy and Natural Resouces Pat Rabbitte said all evidence pointed to the incident being a “naturally occurring earthquake” and emphasised there was “no link” to works on the Corrib field.

Experts from the British Geological Survey said it was "not a warning of anything bigger to come".

However, Tom Blake of the Irish National Seismic Network (INSN) said that the "moderate" quake was “significant” in that it challenged existing information about seismic activity in the region.

Shell EP Ireland said the seismic survey had not started and it had “no reason to believe that this event has had any impact on the sub-sea infrastructure”.

“However, as a precautionary measure, a visual inspection of the offshore infrastructure will be carried out in the coming days,” it said.

Ireland's biggest earthquake on record was in 1984, when a magnitude 5.4 quake struck off Wales, causing some structural damage along the east coast.

Published in Coastal Notes

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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