ILV Granuaile

ILV Granuaile

ILV Granuaile

Granuaile Bow HaulbowlineAn advanced multifunctional vessel

Our aids to navigation vessel, ILV Granuaile, delivered in January 2000, was one of the most advanced vessels of its type in the world at the time.

It was a prototype for new builds for Trinity House (England & Wales), the Northern Lighthouse Board (Scotland) and the Middle East Navigation Aids Service (MENAS).

The ILV Granuaile is a multifunctional vessel which can operate in difficult sea conditions. Fitted with Class I dynamic positioning linked to the satellite-based navigation system DGPS, the vessel's primary function is to place and service our 150 offshore buoys, which warn mariners of the location of sand banks, reefs and other offshore hazards near shipping routes.

The vessel also serves as a helicopter platform for servicing offshore lighthouses and is available to assist State agencies with search & rescue, emergency towing, oil pollution control, surveying and offshore data collection.

The ILV Granuaile is available for hire.  For details, go to our Commercial Services page.


Class/Specification - Lloyds 100A1, + LMC + UMS + DP Class 1- ISM Certification

Gross Tonnage 2,625t
Net Tonnage 787t
Operational Draft 4.6m
Length 79.69m
Breadth Moulded 16.10m
Aft Deck Area 300m2
Container Capability 16 TEU Single Stack
Propulsion 2 X 1,100 kW  Indar Variable Speed AC Motors driving two Schottel steerable thrusters.
1 X 1,200 kW  Bow Thruster (Tees White Gill Jet)

Equipment highlights:

Granuaile Rear ViewThe Granuaile is equipped with specialised buoy and mooring handling equipment including hydraulic ram chain guides and stoppers.  Other features include:

  • 20t (20m outreach) constant tension crane with two independent falls
  • 30t SWL towing winch
  • 2 x 15t capstans
  • 2 x 5t tugger winches
  • 2 x 8m heavy duty timber workboats with passenger licences
  • 1 x 8m fast RIB with passenger licence


Facilitated Services

  • ROV Pipeline/Platform member inspections
  • Cable Route Survey
  • Hydrographic and Seismic Surveying
  • Vibracore Sampling
  • Diving Support for Salvage/Wreck Inspection and Filming
  • Deployment and Maintenance of Buoys
  • Recovery and Deployment of Offshore Devices
  • Oil Spill Response and Containment
  • Standard and Emergency Towage
  • SAR Coordination and Response
  • Helicopter Land-on and Under-slinging
  • Marine Equipment Testing


Vessel Features include:

  • Granuaile TurbineLarge tweendeck and lower hold spaces for storage
  • Class 1 Dynamic Positioning System
  • Integrated Bridge Management System
  • Hydrographic Surveying Suite including track guidance and post processing capabilities
  • Three point mooring for diving operations
  • Step down area for diving or boarding devices
  • Forward helicopter flight-deck with fuelling facilities
  • Under-slinging area at stern
  • Interring Anti-Roll system for operational durability and comfort
  • 40t Bollard Pull
  • Moon Pool (0.5m diameter)


Vessel facilities include:

  • Crew of 16
  • Overnight accommodation for an extra 11 personnel
  • Life Saving Appliances for 39 persons in total
  • Large conference room
  • Recreation room and facilities
  • Two mess rooms
  • 26 en-suite cabins