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Displaying items by tag: UWTV

#MarineScience - The first underwater TV (UWTV) survey of the Bay of Biscay Nephrops grounds was carried out on the RV Celtic Voyager from 20-29 September.

This survey involved collaboration between the fishing industry and IFREMER, the French equivalent of the Marine Institute. The Celtic Voyager was chartered for this survey by the French fishing industry (CNPMEM).

The team of French scientists from Lorient were trained in the UWTV survey methodology by Jennifer Doyle, an expert from the Marine Institute. A fishing industry observer also participated in the survey.

This was the furthest south that the Irish Celtic Voyager research vessel has been to at 45°55′N 2°22′W.


The Bay of Biscay Nephrops grounds, known locally as 'la Grande Vasière', have an area of approximately 11,600 sqkm and support landings of Neprophs (better known as Dublin Bay prawns or langoustines) of around 4,000 tonnes annually.

During the 10-day survey, 160 UWTV stations were successfully completed with an average depth of 100 metres. At each station a sled-mounted camera system is towed at 1 knot. This allows for the detailed examination of the sea bed. The Nephrops burrows on the video footage collected are identified and counted by trained and experienced scientists.

Weather conditions throughout were perfect for TV operations with light winds, little or no swell and sea surface temperature around 20 degrees C. The visibility at the seabed was also excellent. The results from this survey will be analysed by IFREMER scientists to determine stock abundance.

The Marine Institute have been developing UWTV survey methods and technology since 2002. Since then, survey coverage has been expanded: in 2014 the main Nephrops stocks fished in Irish waters are have all been fully surveyed – Aran Grounds, Porcupine Bank, Western Irish Sea, Eastern Irish Sea, South Coast, Smalls, Labadie, Jones and Cockburn Banks.

These UWTV surveys form the cornerstone of the ICES assessments and management advice. The results of the TV surveys directly form the basis of the catch options.

All UWTV Marine Institute surveys reports are available online in the Marine Institute's open access repository.

Published in Marine Science

The 2024 Vendée Globe Race

A record-sized fleet of 44 skippers are aiming for the tenth edition of the Vendée Globe: the 24,296 nautical miles solo non-stop round-the-world race from Les Sables d’Olonne in France, on Sunday, November 10 2024 and will be expected back in mid-January 2025.

Vendée Globe Race FAQs

Six women (Alexia Barrier, Clarisse Cremer, Isabelle Joschke, Sam Davies, Miranda Merron, Pip Hare).

Nine nations (France, Germany, Japan, Finland, Spain, Switzerland, Australia, and Great Britain)

After much speculation following Galway man Enda O’Coineen’s 2016 race debut for Ireland, there were as many as four campaigns proposed at one point, but unfortunately, none have reached the start line.

The Vendée Globe is a sailing race round the world, solo, non-stop and without assistance. It takes place every four years and it is regarded as the Everest of sailing. The event followed in the wake of the Golden Globe which had initiated the first circumnavigation of this type via the three capes (Good Hope, Leeuwin and Horn) in 1968.

The record to beat is Armel Le Cléac’h 74 days 3h 35 minutes 46s set in 2017. Some pundits are saying the boats could beat a sub-60 day time.

The number of theoretical miles to cover is 24,296 miles (45,000 km).

The IMOCA 60 ("Open 60"), is a development class monohull sailing yacht run by the International Monohull Open Class Association (IMOCA). The class pinnacle events are single or two-person ocean races, such as the Route du Rhum and the Vendée Globe.

Zero past winners are competing but two podiums 2017: Alex Thomson second, Jérémie Beyou third. It is also the fifth participation for Jean Le Cam and Alex Thomson, fourth for Arnaud Boissières and Jérémie Beyou.

The youngest on this ninth edition of the race is Alan Roura, 27 years old.

The oldest on this ninth edition is Jean Le Cam, 61 years old.

Over half the fleet are debutantes, totalling 18 first-timers.

The start procedure begins 8 minutes before the gun fires with the warning signal. At 4 minutes before, for the preparatory signal, the skipper must be alone on board, follow the countdown and take the line at the start signal at 13:02hrs local time. If an IMOCA crosses the line too early, it incurs a penalty of 5 hours which they will have to complete on the course before the latitude 38 ° 40 N (just north of Lisbon latitude). For safety reasons, there is no opportunity to turn back and recross the line. A competitor who has not crossed the starting line 60 minutes after the signal will be considered as not starting. They will have to wait until a time indicated by the race committee to start again. No departure will be given after November 18, 2020, at 1:02 p.m when the line closes.

The first boat could be home in sixty days. Expect the leaders from January 7th 2021 but to beat the 2017 race record they need to finish by January 19 2021.

Today, building a brand new IMOCA generally costs between 4.2 and €4.7million, without the sails but second-hand boats that are in short supply can be got for around €1m.

©Afloat 2020

Vendee Globe 2024 Key Figures

  • 10th edition
  • Six women (vs six in 2020)
  • 16 international skippers (vs 12 in 2020)
  • 11 nationalities represented: France, United Kingdom, Switzerland, Germany, Italy, Belgium, Hungary, Japan, China, USA, New Zealand (vs 9 in 2020)
  • 18 rookies (vs 20 in 2020)
  • 30 causes supported
  • 14 new IMOCAs (vs 9 in 2020)
  • Two 'handisport' skippers

At A Glance - Vendee Globe 2024

The 10th edition will leave from Les Sables d’Olonne on November 10, 2024

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