The Tarrea Queen has proved to be a suitable platform from which to carry out geophysical surveys. Depending on the survey specification and equipment, geophysical instruments can be either towed or pole-mounted. The vessel's manoeuvrability has facilitated geophysical surveys ranging from shallow waterinshore surveys on 20m grids to deeper water transects.

Summary Vessel Specification: Length   52 ft Beam     17 ft Gross Weight    32 tonnes  Draft      1.2 metres Crane        3.5 tonne deck crane   (safe working 2 tonnes close in and half a tonne  at 5 metres) Deck Winch    3 tonnes Gen Set     3 phase 380 volt single phase and aso 110 volt engine power twin Doosan 500 HP   Bow & Stern Thrusters       Endurance at 2 kts unlimited and at 8 kts unlimited (fuel capacity at these speeds is 3-4 days)     Safety Equipment Includes:  16 Man Life Raft Flares Lifebuoys Life Jackets First Aid Kit
Wheelhouse Equipment and Facilities Include: ICOM M601 FHM Radio Furuno Model GP-7000F GPS with NMEA output Furuno FCV-600L single beam echo sounder with NMEA outout Furuno Model 1623 Radar Stabilised 240v ac power supply via 13A sockets Benching and seating for inboard equipment and surveyors Cable ports to the wheelhouse for routing deck/instrumentation cables Small Galley Flush toilet, hot and cold water Basic cooking facilities
Deck Equipment and Facilities Include: Starboard 3.5 tonne deck crane (safe working 2 tonnes close in and half a tonne at 5 metres crane) Midships 3 tonne hydraulic winch with safety brake Adaptable mounting bracket on the port side for pole deployment Stern post towing points on the port and starboard side Stern platform for deploying and recovering equipment Compressed air is also available 110 PSI
Geophysical Equipment Deployed from the Vessel Includes: GeoAcoustics Digital GeoChirp - pole mounted Isis Syscal Marine Resistivity System - towed Geometrics G881 Marine Magnetometer - towed Tritech Starfish 450F side scan sonar - pole mounted
Engineering Design and Support Includes: Tarrea Marine Services (TMS sister company is ARD Precision and Fabrication TMS can draw on the expertise of its sister company to assist in the design and fabrication of specialised parts and fittings needed to deploy and maintain equipment on the Tarrea Queen This includes the design, fabrication or modification of mounts and brackets needed to deploy equipment on side-mounted poles e.g. sonars and sub-bottom profilers and to mount GPS antennas Stainless steel grabs for sediment sampling have been fabricated for use on the vessel
Landscape & Geophysical Services : Earthsound: www.earthsound.ie	Photos taken by Airshots www.airshots.ie