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Displaying items by tag: Whittard Canyon

#MarineScience - Marine scientists from Ireland, the UK, US and Germany are starting to examine data collected from the Marine Institute's recent research mission to the Whittard Canyon in the North Atlantic, according to RTÉ News.

As previously reported on Afloat.ie, researchers spent two weeks earlier this month exploring the sea bed of the deep ocean canyon some 250 miles southwest of Cork, using the institute's ROV Holland I to study the diversity of marine wildlife at depths of as much as 3km below the surface.

Among their finds so far is a rare black coral, while samples of deep sea sponge were also taken for analysis of climactic changes to the subsea ecosystem. RTÉ News has more on the story, including video, HERE.

Published in Marine Science

#deepsea – An international research team, led by scientists from NUI Galway, is currently exploring the Whittard Canyon deep-sea submarine canyon system in the North East Atlantic onboard the Marine Institute's RV Celtic Explorer.

Researchers from Ireland, the UK, the USA and Germany are using the Institute's ROV Holland I to study the diversity of deep-water animals and relate this to geology and ocean currents.

The Whittard Canyon system is at the continental margin approximately 250 miles SW of Cork, covers an area of 2000 square miles, and is home to vulnerable marine ecosystems of cold-water corals, deep-water oysters and file clams. But new research is also revealing a remarkable diversity and abundance of rare black corals, which are protected under international legislation.

"The extreme shape of submarine canyons seems to affect the water flow within them in such a way as to deliver nutrient rich waters to particular parts of the canyon system. This allows diverse ecosystems to flourish. Our research is attempting to understand these processes so that we can predict where the most vulnerable ecosystems are likely to occur and therefore ensure the environment is protected," explained Dr Martin White of NUI Galway's Ryan Institute, and the expedition's chief scientist.

According to Dr Louise Allcock, also of NUI Galway's Ryan Institute, "Black corals are particularly vulnerable to any sort of impact. They grow extremely slowly and dating studies have shown that some species live for thousands of years."

The Whittard Canyon system is huge, with meandering branches extending over an area of more than 80 by 20 miles. Mapping the system, much of which is in depths below 1500m, to detect vulnerable species is difficult. Therefore the team hopes that the new data will reveal the factors that determine which species occur where.

ROV Holland I provides a way of sampling deep-sea animals without impacting the ecosystem. The team is also providing deep-sea sponge samples to scientists searching for novel pharmaceutical compounds. If the chemists find interesting compounds such as antibacterial and other pharmaceutical properties in the sponges, they will aim to work out how to synthesize them in the laboratory. This is the first step in the production of new drugs.

The scientists are blogging about their experiences and discoveries aboard RV Celtic Explorer throughout the survey (June 6th – 21st) on the blog scientistsatsea.blogspot.ie and on twitter via the hashtag #ce14009

The research survey is carried out under the Sea Change strategy with the support of the Marine Institute, funded under the Marine Research Sub-Programme by the Irish Government.

Published in Marine Science

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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