Since the spring of 1979, a series of trafficability tests have been completed aboard the U.S. Coast Guard icebreakers in the Alaskan Arctic and in Antarctica. The purpose of these tests was to collect environmental and ship design data necessary to assess the feasibility of commercial transportation systems with icebreaking ships. A total of fifteen deployments were completed, and these included all geographic areas in the Alaskan Arctic. The report provides a technical summary of the achievements and findings from the program. Environmental data includes general descriptions of ice conditions by season and location, and detailed information on pressure ridge characteristics, ice thickness, flexural strength, conditions at the ice edge and drift velocities. Ship performance data includes the general transiting capabilities of the icebreakers and results of dedicated experiments related to resistance, powering, and maneuvering in ice. In addition, data related to structural loads on the hull, propulsion system and steering gear is included.


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    Title :

    Arctic Marine Transportation Program, 1979 to 1986. Technical Summary


    Contributors:
    P. B. Zahn (author) / F. W. DeBord (author) / P. V. Minnick (author)

    Publication date :

    1988


    Size :

    338 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English







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