AbstractWind measurements from ships are troubled by the disturbance of the wind field caused by the ship's hull and superstructure. To minimize this problem we used an anemometer on a boom 10 m off the port side of R.V. Rapuhia (former Meteor). Calculations show that the effect of the ship's rolling motions is negligible in most circumstances. Calibration runs, accelerating and decelerating the ship, were conducted to compare the performance of the anemometer on the boom with a traditional installation on the foremast. Significant differences were found. Even larger differences showed up between routine wind reports prepared by the ship's officers from reading the mast anemometer, and careful measurements with the boom anemometer. The routine reports appear to be 30% too high in moderate to strong winds, and unreliable in low winds. The most accurate wind time series can be constru information collected with both anemometers.


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    Titel :

    Improving the accuracy of wind speed observations from ships


    Beteiligte:


    Erscheinungsdatum :

    30.03.1989


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Low-speed controllability of ships in wind

    Eda, M. | Engineering Index Backfile | 1966


    Low-speed controllability of ships in wind

    Eda, H. | Engineering Index Backfile | 1968




    Ships' speed measurement

    Senior, D.A. | Engineering Index Backfile | 1956