Observations of ship performance and ice conditions in the northern Baltic Sea during the winter 1991 are presented in the report. Ten Finnish ships were studied in various ice conditions by observers onboard the ships. The ice conditions were visually determined except for some fast ice channels outside Kemi and Oulu, which were profiled by drilling. The observers took part in 16 voyages during the period 5th of February to 16th of April. The most pronounced feature of the observations is the great variation of speed during a typical voyage in ice. The variation is mainly related to the changes in the ice conditions, but also the availability of icebreaker assistance has a great affect on the mean speed.


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    Title :

    Performance of Ice-Strengthened Ships in the Northern Baltic Sea in Winter 1991


    Contributors:
    P. Kujala (author) / T. Sundell (author)

    Publication date :

    1992


    Size :

    129 pages



    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English