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Displaying items by tag: Buoyancy

#MCIB - Overloading of the boat deck and a missing hatch at the stern may have caused a fatal loss of buoyancy that led to the drowning of two fishermen off Co Clare last year, according to the official report into the incident.

As previously reported on Afloat.ie, the remains of the two fishermen were found by local divers at the wheelhouse of their sunken boat near Spanish Point on 14 August 2012 during a search operation for the fishing vessel Lady Eileen.

Their craft had been reported missing the previous day after they failed to return from a trip to mend snagged nets, and a massive search operation was mounted after debris and diesel were discovered in the water close to Spanish Point that evening.

The two men lost were later named as owner/skipper Michael Galvin and crew Noel Dickinson, both of Quilty in Co Clare.

In its official report into the incident, the Marine Casualty Investigation Board (MCIB) found that the vessel had a low freeboard, such that even in an unladen condition it would not have to heel by a significant degree to take water on the deck.

With the weight of nets and the seawater tank used to store crustaceans, the vessel's freeboard was reduced such that water would be allowed to "flow freely on to the deck even in very calm weather conditions". This is water that would not be quickly released, with potentially very serious effects on the craft's buoyancy.

In addition, a panel removed by Galvin some weeks before to do repair work on the sterngear appeared not to have been replaced, possibly allowing a catastrophic amount of water on deck if the boat encountered wind or wave action.

With no witnesses to the incident it is unknown exactly what happened to cause the boat to be swamped, though it is thought to have transpired very quickly as neither man was wearing a lifejacket and the boat's manually operated emergency beacon in the wheelhouse was not activated.

Among the MCIB's recommendations is that the Minister for Transport reviews the Code of Practice for fishing vessels under 15m to devise new stability criteria.

Volunteers participating in search operations have also been urged to co-ordinate their assistance, after an open boat with three on board was capsized by waves while searching for the Lady Eileen and its crew.

All were thrown overboard though were quickly rescued by Garda divers in the area.

The full report from the MCIB is available to download below.

Published in MCIB

Marine Science Perhaps it is the work of the Irish research vessel RV Celtic Explorer out in the Atlantic Ocean that best highlights the essential nature of marine research, development and sustainable management, through which Ireland is developing a strong and well-deserved reputation as an emerging centre of excellence. From Wavebob Ocean energy technology to aquaculture to weather buoys and oil exploration these pages document the work of Irish marine science and how Irish scientists have secured prominent roles in many European and international marine science bodies.

 

At A Glance – Ocean Facts

  • 71% of the earth’s surface is covered by the ocean
  • The ocean is responsible for the water cycle, which affects our weather
  • The ocean absorbs 30% of the carbon dioxide added to the atmosphere by human activity
  • The real map of Ireland has a seabed territory ten times the size of its land area
  • The ocean is the support system of our planet.
  • Over half of the oxygen we breathe was produced in the ocean
  • The global market for seaweed is valued at approximately €5.4 billion
  • · Coral reefs are among the oldest ecosystems in the world — at 230 million years
  • 1.9 million people live within 5km of the coast in Ireland
  • Ocean waters hold nearly 20 million tons of gold. If we could mine all of the gold from the ocean, we would have enough to give every person on earth 9lbs of the precious metal!
  • Aquaculture is the fastest growing food sector in the world – Ireland is ranked 7th largest aquaculture producer in the EU
  • The Atlantic Ocean is the second largest ocean in the world, covering 20% of the earth’s surface. Out of all the oceans, the Atlantic Ocean is the saltiest
  • The Pacific Ocean is the largest ocean in the world. It’s bigger than all the continents put together
  • Ireland is surrounded by some of the most productive fishing grounds in Europe, with Irish commercial fish landings worth around €200 million annually
  • 97% of the earth’s water is in the ocean
  • The ocean provides the greatest amount of the world’s protein consumed by humans
  • Plastic affects 700 species in the oceans from plankton to whales.
  • Only 10% of the oceans have been explored.
  • 8 million tonnes of plastic enter the ocean each year, equal to dumping a garbage truck of plastic into the ocean every minute.
  • 12 humans have walked on the moon but only 3 humans have been to the deepest part of the ocean.

(Ref: Marine Institute)

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