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Displaying items by tag: 3D seismic survey

#MarineNotice - The latest Marine Notice from the Department of Transport, Tourism and Sport (DDTTAS) advises that Polarcus DMCC is scheduled to carry out a 3D seismic survey in the Porcupine Basin, southwest coast of Ireland, in early September.

The survey will cover 633 sq km and is is expected to last for around 20 days, subject to weather.

The seismic vessel M/V Polarcus Amani (Call sign C6ZD3) is scheduled to carry out the work. The vessel will be towing 10 cables, each 8.1km long with 150m separation at depth of 14 metres, with a total array width of 1.35km.

A buoy equipped with a radar reflector and navigation strobe light will be deployed at the end of each cable.

The seismic vessel will be accompanied by support vessel M/V Bravo Sapphire (Call sign ZDJY8) and chase vessel M/V Nomad (Call sign EI5298). All work vessels will be listening on VHF Channels 16 and 67.

The seismic vessel in particular will be restricted in its ability to manoeuvre while carrying out the survey so all vessels, particularly those engaged in fishing, are requested to give the M/V Polarcus Amani, her towed equipment, the M/V Bravo Sapphire and the M/V Nomad a wide berth and keep a sharp lookout in the relevant areas.

Co-ordinates for the proposed seismic 3D survey are included in Marine Notice No 52 of 2014, a PDF of which is available to read or download HERE.

Published in Marine Warning

#MarineNotice - Dolphin Geophysical AS, on behalf of Capricorn Ireland Limited, is scheduled to carry out a 3D seismic survey in the Northern Porcupine Basin next month.

The survey will cover 1,974.5 sq km off the west coast and is anticipated to commence at the beginning of next month for 45 to 60 days, subject to weather.

The seismic vessel M/V Sanco Sword (Call sign ZDNE7) is scheduled to carry out the work. This vessel will tow 12 cables, each 8km long with 100m separation at a depth of 16-24m below the surface, for a total width array of 1.1km.

The seismic vessel will be accompanied by support vessel M/V Sunrise-G (Call sign 3FKF6) and guard vessel M/V Ary (Call sign YJQJ5).

The seismic vessel will be restricted in its ability to manoeuvre while carrying out the survey, and all vessels are requested to give these 3D survey operations a wide berth. The work vessels will be listening on VHF Channel 16 throughout the project.

All other vessels, particularly those engaged in fishing, are requested to give the M/V Sanco Sword, the M/V Sunrise-G and M/V Ary and their towed equipment a wide berth and keep a sharp lookout in the relevant areas.

Full details of co-ordinates for this survey operation are included in Marine Notice No 44 of 2014, a PDF of which is available to read or download HERE.

Published in Marine Warning

#MarineNotice - The latest Marine Notice from the Department of Transport, Tourism and Sport (DTTAS) advises of a 3D seismic survey in the Porcupine Basin off the Kerry coast to begin in early July for a period of seven weeks, weather permitting.

Polarcus, on behalf of Kosmos Energy Ireland, is scheduled to carry out the work over an area of more than 5,700 square kilometres in a region previously identified as having potential for enormous oil reserves.

Carrying out the survey will be the seismic vessel M/V Polarcus Amani (Call sign: C6ZD3). The vessel will be towing 10 cables, each 7.2km long and 150m apart, at a depth of 10m. The total width of the array is 1.35km. A buoy with a radar reflector and navigation strobe light will be deployed at the end of each cable.

The seismic vessel will also be accompanies by the support vessel M/V Bravo Sapphire (Call sign: ZDJY8) and chase vessel M/V Calvin (Call sign: 3EGU4). All three will be listening on VHF Channel 16 throughout the project.

The work vessels will also be restricted in their ability to manoeuvre while carrying out the survey, and all other vessel are requested to give these operations a wide berth and keep a sharp lookout in the relevant areas.

Full details of co-ordinates and a map of the work area are included in Marine Notice No 28 of 2013, a PDF of which is available to read or download HERE.

Published in Marine Warning

#MarineNotice - CGG, on behalf of Fastnet Oil & Gas, is scheduled to carry out a full 3D seismic survey at Mizzen Basin in the Celtic Sea off the south-west coast beginning this month.

Details of this survey - as part of Fastnet's option on the Deep Kinsale Prospect - were previously reported on Afloat.ie but some details have been amended since.

The survey is expected to run for 35 days, subject to weather.

For full details - including co-ordinates of the work areas - see Marine Notice No 22 of 2013, a PDF of which is available to read or download HERE.

Published in Marine Warning

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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