FRV Scotia - The Scottish Government - Home is used to monitor and evaluate fish stocks by means of

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    FRV Scotia

    IntroductionFRV Scotia was built by Ferguson Shipbuilders Ltd at PortGlasgow for the then Scottish Office and completed earlyin 1998. Operating from her home port in Aberdeen, Scotiais used for fish stock assessment and environmentalmonitoring in the North Sea and north Atlantic waters.She carries a crew of 17 and can accommodate up to 12scientists.

    Fisheries data and other information gathered on researchcruises are essential to the success of Fisheries ResearchServices (FRS) scientific programme, which underpinsadvice given to Government. To ensure the availability ofthis information, FRS operates two research vessels FRV Scotia and FRV Clupea. Both vessels are fitted witha wide range of deployment and recovery facilities forfishing gear and equipment, scientific and environmentalsensors and data gathering systems.

    Much of FRS experimental work is conducted at sea usingvery specialised or custom-built monitoring, measuringand observation equipment. For the design, developmentand maintenance of such equipment, FRS is dependenton the electronic and mechanical skills and expertise ofits Engineering Services department.

    Handling Scientific EquipmentA range of on-board cranes and winches enable the safedeployment of specialised equipment. The main winchesare tension controlled to deal with surging loads, and the

    cranes are fitted with heads that clamp equipment totheir tips. A gamma frame enables equipment to be liftedfrom the aft deck and moved outboard from the vessel,without impeding the simultaneous use of the fishingcrane.

    TrawlingScotia is fitted with a stern ramp for trawling, with themain trawl winches fitted below deck. The trawl-deck isvisible from the bridge, and from a control cabin. A fullyinstrumented autotrawl system and a net sensor systemenables the dimensions of the net and the position of thetrawl behind the ship to be monitored.

    Modular LaboratoriesThe specially equipped laboratories are containerisedand can be loaded within the body of the ship, or takenaway for servicing or operation on land. They can be fittedout for particular tasks (acoustic surveys, hydrography,plankton surveys, or pollution monitoring) in advance ofa cruise.

    Low NoiseAn important task for Scotia is the operation of acousticsurveys of pelagic fish stocks. For this, a low level ofunderwater noise propagation is essential, and particularattention has been paid to soundproofing the machineryand propulsion system to enable a very low level of


  • underwater noise propagation. The hull is fitted with adrop keel to carry acoustic transducers some 3 metresbelow the ships keel to minimise acoustic signalinterference in bad weather. The drop keel can be retractedwhen required so that the transducers can be servicedwithout dry-docking.

    Flexible OperationThe hull is designed to give good sea-keepingcharacteristics, even when trawling in bad weather. Thediesel-electric propulsion system with three diesel-drivengenerators supplying power to two in-line electric motorsis quiet and allows great flexibility and economy ofoperation. The ship can cruise on a single diesel generator,but would require the use of all three generators whiletowing a large pelagic trawl. Station keeping is maintainedby a combination of the single screw main power drive,the rudder, an omni-directional bow thruster, and tunnelstern thruster, steered by a dynamic position-fixing systemreferenced through satellites.

    The TasksScotia is used to monitor and evaluate fish stocks bymeans of trawling, acoustic surveys, and specialisedsampling. The ship is also equipped to carry out state-of-the-art oceanographic sampling in all weather conditions,and plays an important role in monitoring the seas aroundScotland.

    Cranes: 1 Aukra Type KDE60, articulated telescopiccod-end handling crane

    1 Aukra 5T hydrographic equipment crane1 Aukra 10T hydraulic plankton crane1 Aukra 10T hydraulic crane to load containerised

    laboratories1 Odim hydraulic Gamma frame (6.5T)

    Winches: 2 Brattvaag Type D2M300 main trawl winches, housed below the main trawl deck. Maximum pull of 34T, capacity of 3,500 m of 28 mm wire

    1 Ulstein synchro 2020 auto trawl system for automatic control and monitoring of both trawl winches

    2 Brattvaag Type DMM 14185 Gilson winches, each with a mid pull of 13T with a wire capacity of 200 m of 28 mm wire

    2 Brattvaag Type Net 2M4185 split netdrums with removable dividing flange. Each has a mid pull of 24T and a drum capacity of 10 m3

    1 Brattvaag Type Net M2202 net storage drum located in the net repair area

    8 Brattvaag low pressure hydraulic winches are provided for hydrographic and specialised scientific purposes.

    Acoustic Equipment: Simrad EK500 echo sounder + EK 60: 38kHz, 120kHz, 200kHz

    Simrad EA 500 oceanographic sounder: 18kHzSimrad EM 950 multi-beam swathe echo sounder:

    95kHzRDI broad band ADCP: 150 kHzSimrad SH80 short range sonar: 115-122kHz

    (tunable)Simrad SR 240 long range sonar: 24kHzSimrad SM2000P multi-beam profiling sonar:

    200kHzSimrad ES 60 fishing echo sounder: 50/200kHSimrad ITI trawl instrumentation systemScanmar trawl instrumentation systemSimrad echo sounding synchronisation system

    FRV Scotia Specification

    Shipyard: Ferguson Shipbuilders Ltd of Port Glasgow

    Designer: Skipsteknisk A/S, of lesund, Norway

    Classification: Lloyds+ 100A1 Ice Class 1D +LMC +UMS +SCM"Fishery Research Vessel"

    Length OA: 68.60 metres

    Length BP: 60.60 metres

    Breadth mld: 15.00 metres

    Draught: 5.60 metres

    Service speed: 13 knots

    Quiet running speed: 10-11 knots

    Max towing speed: 5.5 knots (30 tonne pull)

    Main engines: 3 Wrtsil Type 9L20 DE Marine diesel engines

    Generators: 3 Ansaldo Type GSCR630X8

    Propulsion motors: 2 Ansaldo Type DH900DC

    Auxiliaries: 1 Cummings harbour alternator (240 KW)1 Cummings emergency alternator (88 KW)

    Power supply: A 230 volt 'clean' electrical supplyis provided by two Hitzinger Motor Generators

    Bow thruster: Elliot White Gill Bow thruster (720 KW)

    Stern thruster: Brunvoll electric tunnel thruster (380 KW)

    Navigational: 1 Furuno Far 2835 - S ARPA radar2 Furuno FR 2110/ 6.5 X band radar1 Racal Marine Mk53 Decca receiver1 Raytheon Nav 398 Loran C receiver1 Sercel NR 58 DGPS satellite receiver1 Sercel NR 230 DGPS satellite receiver2 Microplot Mariner Navigation plotters with ARCS charts1 Furuno FE680 Navigational echo sounder1 Robertson Autopilot2 RGC11Gyro compasses1 Lilley and Gilley Sestreline Class A magnetic compass1 Furuno CI -35 Current / Speed log1 Sailor communication equipment fully compliant to

    GMDSS area

    Accommodation: 17 crew, 12 scientists