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1 2015

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Comparison between measured and calculated underwaterpressure of merchant ship

Bielański J., Listewnik K.

Hydroacoustics

2015

Vol. 18

7--16

From 2012 The Polish Naval Academy take part in an international research project SIRAMIS, carried out in the framework of the European Defence Agency. The objective of this project is to improve the understanding of ship signature interaction with multi influence sensors in relevant and realistic scenario's. This paper describes selected results of the comparison results of sea trials and model calculations of the hydrodynamic field distribution around a moving ship in selected waters of The Gulf of Gdansk. Despite the good results of the comparison of calculations and measurements of pressure signature on the example of a passenger ship, some measurements deviate significantly from the theoretical results. Due to the lack of reproducibility of these deviations may be due to errors in reading real position of underwater measurement modules. This comparison allows increasing the reliability of theoretical calculations by the results of measurements, and it is expected that the development of this method allows determining the parameters of the pressure under the hull at any point situated at a distance of not more than 1 meter from the seabed.