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    First of Aker Arctic Caspian icebreaking tugs launched

    Vessel & ROV News // May 26, 2010

    MANGYSTAU 1 is due to be delivered in August.

    At the end of April the first of three Caspian icebreaker tug vessels was launched at STX Braila shipyard in Romania. The vessel was named MANGYSTAU-1 after the region where she will be based. The owner is a group of Kazakhstan companies, Caspian Offshore Construction LLC. This first 50 ton bollard pull icebreaking tug will be handed over to the customer in August.
    The ARC 104 concept design developed by Aker Arctic fulfilled all the requirements set by AGIP KCO, the operator of the giant Kashagan-offshore oil field, including the high local content offered by COC.

    The contract for the construction was signed in spring 2009. Aker Arctic conducted the basic design for the building yard, including class approval by Bureau Veritas to ice class "Ice Class IA Super, Special service - North Caspian Sea Icebreaker with ice breaking capability up to 0,6 m level ice thickness".
    Said Aker Arctic: "The great challenge in developing these icebreaking tugs was the reduced draught compared with any previous vessels, only 2.5m operating draught, simultaneously with the high icebreaking capacity."

    "For this reason the vessels will be fitted with three Schottel SPR 2020 type 1,600kW azimuthing pulling thrusters, providing a total of 4.8MW. The propellers are driven by four Caterpillar 3512 C type diesel engines at 1,790kW at 1,800 rpm. The total effect of the power plant is thus 7,160kW."

    "The vessels are winterised to work in tempreatures down to -35 degrees Celsius and they also feature an over-pressurised interior, which will safeguard the crew to continue safe operation should there be an accidental H2S blow-out."

    The superstructure can also accommodate 300 evacuees from oil production platforms. 


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