Displaying items by tag: Aran prawn ground

26th March 2018

Marine Notice: Acoustic Doppler Profiler Deployed In Aran Prawn Ground

Marine Notice No 12 of 2018 advises that the Marine Institute was scheduled to deploy a bottom-mounted acoustic Doppler current profiler (ADCP) on the Aran prawn ground today, Monday 26 March.

The ADCP will be recovered in May and will remain in place for the duration. The purpose of this deployment is to measure water current speed over a depth range using the Doppler effect of sound waves scattered from particles within the water column.

The ADCP was set to be deployed at Latitude 53°46.133 N and Longitude 9°47.4 W by the RV Celtic Voyager (Callsign EIQN) listening on VHF Channel 16.

As this is sensitive scientific equipment, it is requested that fishermen and marine operators engaged in such activities as bottom trawling or laying of static gear avoid the location concerned to avoid damaging the equipment or damaging fishing gear.

Published in Marine Science

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About Conor O'Brien, Irish Circumnavigator

In 1923-25, Conor O'Brien became the first amateur skipper to circle the world south of the Great Capes. O'Brien's boat Saoirse was reputedly the first small boat (42-foot, 13 metres long) to sail around the world since Joshua Slocum completed his voyage in the 'Spray' during 1895 to 1898. It is a journey that O' Brien documented in his book Across Three Oceans. O'Brien's voyage began and ended at the Port of Foynes, County Limerick, Ireland, where he lived.

Saoirse, under O'Brien's command and with three crew, was the first yacht to circumnavigate the world by way of the three great capes: Cape Horn, Cape of Good Hope and Cape Leeuwin; and was the first boat flying the Irish tri-colour to enter many of the world's ports and harbours. He ran down his easting in the Roaring Forties and Furious Fifties between the years 1923 to 1925.

Up until O'Brien's circumnavigation, this route was the preserve of square-rigged grain ships taking part in the grain race from Australia to England via Cape Horn (also known as the clipper route).

At a Glance - Conor O'Brien's Circumnavigation

In June 1923, Limerick man Conor O’Brien set off on his yacht, the Saoirse — named after the then newly created Irish Free State — on the two-year voyage from Dun Laoghaire Harbour that was to make him the first Irish amateur to sail around the world.

June 1923 - Saoirse’s arrival in Madeira after her maiden passage out from Dublin Bay

2nd December 1924 - Saoirse crossed the longitude of Cape Horn

June 20th 1925 - O’Brien’s return to Dun Laoghaire Harbour