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Displaying items by tag: Suspected Timber Wrecks

#SuspectedWrecks – According to the Geological Survey of Ireland (GSI) they suspect a buried timber wreck lies close to the entrance of Dun Laoghaire Harbour, writes Jehan Ashmore.

In recent days the GSI's South African built research vessel RV Keary, named after Raymond Keary, one of Ireland's pioneering marine geologists, has been carrying out site investigations assisted by her tender boat.

The underwater work is also according to another source understood to be associated with the proposed cruise line pier. As part of these works divers over the next few days are to assess the archaeological significance (or otherwise) of up to two wrecks located within the harbour before a dredging licence can be granted.

On this occasion divers are to use an underwater vacuum system to suck the silt away from the wreck to discover what condition it's in.

One wreck is close to the East Pier Lighthouse and the other is in the centre of the shipping channel as shown in the photo above taken yesterday. The vessel is seen with a flag aloft her mast which denotes diving operations are underway.

The asymmetrical catamaran hull which is grey in colour having been constructed of marine grade aluminium, instead seemed to appear almost white due to the strong winter sunshine.

Designed by Nic De Waal of Teknicraft in New Zealand, RV Keary's specific design brief was to a nearshore, shallow water survey platform. The stout-looking craft was manufactured by Veecraft Marine of Capetown and completed in 2008.

She was transported by cargoship to northern Europe from where she continued her delivery voyage which took several days to include bunker calls en route along the UK south coast.

As she made passage along the Leinster seaboard she transited Dalkey Sound before finally reaching her homeport of Dun Laoghaire.

In recent years RV Keary has been joined by a smaller inshore RIB, RV Geo and the chartered Central Fisheries Board Cosantoir Bradan, a patrol squadron cutter.

RV Keary's fleetmates were also at the time in the harbour but berthed in the marina.

 

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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