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Displaying items by tag: Wave buoy

TechWorks Marine has scheduled the deployment of a wave buoy off the coast of Wicklow on Tuesday 8 December, weather allowing.

The buoy will be a yellow DB 500 and have a flashing light sequence of five flashes every 20 seconds, with a range of three nautical miles. The buoy will be marked with a St Andrew’s sross and radar reflector.

The wave buoy will be deployed at 53° 2' 35” N, -5° 41' 17” W by the the AMS Retriever (Callsign MEHI8) with an AIS system on board which has a provisional callsign of CWPW01.

If the deployment is delayed due to the weather, it will be carried out on the next viable tide and weather window. Once deployed, the wave buoy will remain on site for a minimum of six months.

Further details can be found in Marine Notice No 57 of 2020, a PDF of which is available to download below.

Published in Marine Warning

TechWorks Marine has deployed an operational Wave Buoy by Port of Cork in late 2016, to be deployed at Roche’s Point on the approach to Cork Harbour.

As the Wave climate in Ireland takes its toll on equipment, a large platform was recommended in order to survive the heavy weather, and maximise visibility of the data buoy to the shipping activity using the harbour on a daily basis.

Central to this development is the TechWorks Marine TMBB-Data Acquisition and Transmission system, the versatile and configurable monitoring platform is designed around it. The TMBB is a robust, reliable and scalable data acquisition system, which ensures the ongoing collection and transmission of quality assured data to enable clients to make informed decisions linked to their commercial activity. Already operational, data is being transmitted in real-time every 20 minutes to the Port of Cork Operations station. The inertial wave sensor used on the buoy is the SeaView Systems SVS-603. The Mobilis Jet9000 buoy Hull was selected as the most robust and reliable platform for such long term operational deployment.

The engineering team at TechWorks Marine carried out the full system integration and testing and extensive onsite training was provided, combined with detailed hardware and software documentation. The TechWorks Marine Data buoy can be easily upgraded in the future with additional Meteorological and Oceanographic sensors given the modular structure of the TMBB system.

Ms Charlotte O’Kelly, CEO of TechWorks Marine confirmed that the Wave buoy was deployed operationally in early December following initial on-site testing by TechWorks Marine. Ms O'Kelly said: ‘At present, the data buoy reports directly to the Port of Cork operations centre from where its data is used to ensure the safety of ships coming in and out of the Harbour.’

Port of Cork Harbour Master, Captain Paul O Regan commented on the wave buoy saying: ‘To date the wave data we have collected has been extremely useful with regards to our shipping operations. Safety is our first priority at the Port of Cork and this technology will assist us as we see larger vessels arriving into the port.’

Published in Cork Harbour

About the 29er Skiff Dinghy

The 29er is a one-design double-handed, single trapeze skiff for youth sailors.

There is an active class in Ireland, just one of the 38-countries from across all continents now racing the high-performance skiff.

The 29er is one of the latest dinghy classes to arrive in Ireland and has a 50/50 split between boys and girls.

The class like to describe the boat as "The most popular skiff for sailors who want to go fast!".

Derived from the Olympic class 49er class and designed by Julian Bethwaite the 29er was first produced in 1998.

Two sailors sail the 29er, one on trapeze.

The class is targeted at youth sailors aiming at sailing the larger 49er which is an Olympic class.


The 6.25-metre high rig features a fractional asymmetrical spinnaker; a self-tacking jib decreases the workload of the crew, making manoeuvres more efficient and freeing the crew to take the mainsheet upwind and on two-sail reaches.

The 15.00 m2 spinnaker rigging set-up challenges crews to be fit and coordinated, and manoeuvres in the boat require athleticism due to its lack of inherent stability and the high speed with which the fully battened mainsail and jib power up.

The 74kg weight hull is constructed of fibreglass-reinforced polyester in a foam sandwich layout.

The fully battened mainsail and jib are made from a transparent Mylar laminate with orange or red Dacron trimming, while the spinnaker is manufactured from ripstop Nylon.

The mast is in three parts - an aluminium bottom and middle section, with a polyester-fibreglass composite tip to increase mast bend and decrease both overall weights, and the capsizing moment a heavy mast tip can generate. Foils are aluminium or fibreglass.

About the ILCA/Laser Dinghy

The ILCA, formerly known as the Laser, is the most produced boat in the world, with 220,000 units built since 1971.

It's easy to see why the single-handed dinghy has won the title of the most widely distributed boat of all time.

The Laser is a one-design dinghy, the hulls being identical but three rigs that can be used according to the size and weight of the sailor.

The class is international, with sailors from 120 countries. The boat has also been an Olympic class since 1996, being both the men's and women's singlehanded dinghy.

Three rigs are recognised by the International Laser Class Association (ILCA):

  • ILCA 4: sail of 4.70m2
  • ILCA 6: sail of 5.76 m2
  • ILCA 7: sail of 7.06 m2

29er skiff technical specs

  • Hull weight 74kg (163lb)
  • LOA 4.45m (14.4ft)
  • Beam 1.77m (5ft 7in)
  • Crew 2 (single trapeze) 
  • Spinnaker area 15.00 m2 (181.2sq.ft)
  • Upwind sail area 12.5 m2 (142.0 sq.ft)
  • Mast length 6.25m (20.5ft)

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