#FORMER IRISH LIGHTS TENDER -With the Guardian 8 preparing to set sail from her builders homeport of Arklow this month, as previously reported on Afloat.ie, her owners Gardline Marine Services also operate a former Commissioners of Irish Lights tender, writes Jehan Ashmore.

The Great Yarmouth based company operate a multi-purpose fleet which includes the survey vessel Ocean Seeker (PHOTO). She was a familiar sight as the ILV Granuaile (1970/1,943grt) while serving for three decades from the Irish Lights marine depot in Dun Laoghaire Harbour.

Built by Fergusan Brothers of Port Glasgow, she was the last traditional tender for CIL in that her working deck was positioned forward. Apart from the short career of the Gray Seal, the 2000 built successor ILV Granuaile (the third to carry the name of the Mayo pirate queen) was the first custom built tender for CIL to introduce a radical design with an aft end work deck.

Regular guided tours will provide a fascinating insight into the work of the Commissioners of Irish Lights (CIL). The tours (first-come basis) are also available for disabled access and they start from 12 noon to 5pm, noting the last tour is 4.30pm. Location: Harbour Road, Dún Laoghaire.

Like most of the tours and events in Open House Dublin, there is no pre-booking required. Entry is FREE and on a first-come basis. For more information about what to expect from your tour or event, check the How It Works by clicking HERE.

CIL operate the 79m aids-to-navigation tender ILV Granuaile which is based at her homeport of Dun Laoghaire. The 2,625grt tender was built by the Dutch Damen Shipyard group in Galati, Romania. She was then towed to The Netherlands where further outfitting work was conducted. She entered service in 2000 and she is the third tender to be named after the Mayo pirate queen.

Occasionally ILV Granuaile can be seen moored alongside the berth adjacant to the marine depot accessed through Dun Laoghaire Marina, though she mostly calls to the harbour's western bight area, using her DP (dynamic-positioning) mode. Her design is ideally suited for buoy and chain work, search and rescue, salvage and recovery, towing, hydrographic applications, and ROV work.

She is shallow drafted at 4.4m and has heavy lifting equipment including a 20 tonne aft-mounted crane with an outreach of 20m. Accommodation is for a crew of 16 in addition there are cabins for a further 10 persons.

Sailing was not the only activity that took place in Dublin Bay last Saturday as the Northern Lighthouse Board's (NLB) multi-function tender NLV Pharos was busy at work, writes Jehan Ashmore.

The NLB is the Scottish equivalent of the Commissioners of Irish Lights (CIL) and it is not unusual for such vessels to share work duties beyond their respective jurisdictions. The 84m NLV Pharos is equipped with dynamic positioning and a 30-tonne main crane on her 300m2 aft-deck.

Overall she is similar in appearance to Irish lights ILV Granuaile which is based out of Dun Laoghaire. The Irish Lights tender built in Romania in 2000 tends to operate more often off the west coast during the summer months due to the more favourable weather conditions.

The 1,300 (dwt) deadweight tonnes NLV Pharos yesterday returned to her base in Oban from her Irish duties. The west coast base was established in 1904 and is also homeport to the service's smaller NLV Pole Star which is equipped with an 18-tonne crane on her 90m2 aft deck.

The facility in 2000 underwent a £4.2 million redevelopment to turn a buoy yard into a multi functional support base which is computer-linked to the NLB headquarters in Edinburgh.

In addition Trinity House which maintains the service for England and Wales operate the tenders THV Galtea,THV Patricia and the fast-response craft THV Alert from their base in Harwich.

Trinity House forms the trio of the General Lighthouse Authorities (GLA) alongside NLB and CIL. Each member of the GLA co-operate in the allocation of vessel-tender deployment.

Asides the varied and critical role of the tasks performed by the GLA's tenders, they are also available for charter to third parties. Between them the tenders can conduct buoy and chain work, search and rescue, lighthouse re-fuelling, salvage and recovery, towing, hydrographic applications and ROV work.

The decommissioned Codling Bank (Lanby) buoy is no longer in the water but rests firmly on a quayside in Dublin Port, writes Jehan Ashmore. In late July  the Commissioners of Irish Lights withdrew the Lanby (Large Automated Navigation Buoy) was towed by the tender ILV Granuaile to the Coal Quay where the Lanby was hoisted out of the water.

The Lanby neighbours the adjacant Hammond Lane Company which is due to demolish the structure for scrapping. The removal of the Lanby, the last to serve in Irish waters, completes the withdrawal of Major Floating Aids to Navigation (MFAs) that also consisted of Lightships.

The Lanby was replaced with a Type 1 buoy to mark the Codling Bank offshore of Arklow. The new aids to navigation buoy has a focal in excess of 5-metres is fitted with a racon and Automatic Identification System (AIS).

Apart from loading scrap-metal the Coal Quay is also used by vessels for dry-cargoes trades such as animal feed, re-cycled glass and fertiliser.

The decommissioned Codling Bank Lanby on the Coal Quay Dublin on 8 August awaiting demolition. Photo: Jehan Ashmore

The Commissioners of Irish Lights (CIL) withdrew the Codling Bank Lanby off Arklow on 24 July. This was the last Lanby to serve in Irish waters. The Lanby (Large Automated Navigation Buoy) is essentially a floating circular platform with a tower positioned centrally and fitted with a light to ward off potential dangers to shipping, writes Jehan Ashmore.

The Lanby was replaced with a Type 1 buoy which has a focal in excess of 5 metres and is fitted with a racon and Automatic Identification System (AIS).

Irish Lights aids to navigation tender, ILV Granuaile towed the former Codling Lanby to Dublin. The Lanby was hoisted out of the water and remains high and dry on the quayside awaiting demolition by the Hammond Lane Company. This final Lanby completes the withdrawal of Major Floating Aids to Navigation (MFAs) throughout Irish waters.

Lanbys were first introduced in the 1960s as replacements for lightships on certain stations. The ALF Gannet, the last Irish lightship, which was converted in the mid-1980's into an Automatic Light-Float (ALF) was withdrawn from the South Rock station off Portavogie in February 2009. The ALF Gannet was towed to Dun Laoghaire and laid-up at Carlisle Pier. Earlier this year ALF Gannet was sold and towed to new owners in the UK.

With modern navigating systems coupled with the amount of traffic and the degree of risk, CIL made the decision to withdraw the MFAs and replace them with Type 1 buoys.

The work of maintaining navigational aids is conducted at CIL's joint marine depot and head-quarters at Dun Laoghaire, which was built in 2008. A marine-depot facility did exist previously at the same site while administrative offices were located in Pembroke Street, Dublin.

In June, CIL celebrated its 200th year since establishment in 1810. The authority is entrusted to maintain, service and update all aids to navigation around the entire coastline of Ireland, providing a vital and invaluable service to mariners.

Assides the use of the tender, ILV Granuaile, Irish Lights also operate the tug-buoy tender, Puffin, also based at Dun Laoghaire.

The Codling LANBY at  Irish Lights headquarters, Dun Laoghaire in 2009 with tender ILV Granuaile. Photo: Jehan Ashmore/ShipSNAPS