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    Thales Venturer joins the fleet

    Vessel & ROV News // June 1, 2001
    Thales GeoSolutions Group Limited announced at the SubOptic exhibition in Kyoto, Japan that it had purchased the cable route survey vessel, Thales Venturer (formerly the SeisVenturer).

    Built in Norway in 1986, Thales Venturer is maintained to DNV classification. At 89m in length the vessel is larger than most vessels operating in the cable route survey market and therefore offers excellent seakeeping ability. The accommodation onboardis of a high standard and there are 40 single cabins with ensuite facilities.

    The Thales Venturer is powered by 3 x 2,255hp Rolls-Royce engines, which enable the vessel to reach a top speed of 15kt. Electrical power is supplied by three main generators, which produce 5,889kVA total. Propulsion is via dual pitch propellers driven directly, or by diesel electric motors. All the vessel's main equipment is flexibly mounted reducing vibration and noise generation.

    To facilitate efficient processing of the survey data, the Thales Venturer has 180 square metre instrument room, the layout of which is being custom-designed in collaboration with a major cable installer.

    At the heart of the survey instrumentation package is SeaFalcon 11, a new generation multibeam echo sounder, which provides accurate mapping and unequalled coverage of the seabed at depths of up to 11,000m. The SeaFalcon 11 operates around a central frequency of 12kHz.

    The latest survey sensors for shelf survey applications, including a high resolution 50kHz Reson SeaBat 8160 multibeam and fully instrumented, deep tow sidescan sonars with integrated 'chirp' sub-bottom profiling complement her equipment fit.

    Towfish positioning will be achieved using Posidonia, an Ultra Short Base Line (USBL) hydro-acoustic positioning system capable of providing positioning over a wide area down to 6,000 metres in noisy environments.

    The ship will also carry a range of geotechnical survey tools including gravity corer and grab sampler. Data acquisition will be performed on the latest high-speed workstations using a range of sophisticated software tools to enable full onboard processing in near real-time.

    Work is underway to instrument and reconfigure the Thales Venturer and it is anticipated that the vessel will be ready for service in the summer of 2001.

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