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Interaction Forces Between Two Ships During Underway Replenishment

Published online by Cambridge University Press:  13 June 2016

Anna Miller
Anna Miller*
Affiliation:
(Gdynia Maritime University, 81–187 Gdynia, ul. Morska 81–87)
*
(E-mail: a.miller@we.am.gdynia.pl)
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Abstract

Knowledge of forces and yaw moments which exist between a pair of vessels moving parallel to each other is crucial to the design of their automatic motion control system. Studies involving measurements of forces and moments occurring between a pair of ships were undertaken. The research was carried out on the basis of two real floating training ship models made at 1:24 scale in real conditions on the Silm Lake in Ilawa Kamionka. As a result, suction forces and yaw moments occurring between the pair of vessels calculated according to semi-empirical formula were verified. It was found that the process of overtaking and parallel motion (which is a quasi-stationary motion) could not be modelled in the same way. Nevertheless, the results confirmed the presence of forces and moments with values similar to those in the catch-up and parallel motion phases during the ships’ overtaking manoeuvre. Thanks to this confirmation, it was possible to use the results of the analytical calculation for the catch-up phase during design of the ships' parallel motion automatic control system.

Keywords

Interaction forces verificationUNREPReal conditions suction forces measurementReal time measurement
Type
Research Article
Information
The Journal of Navigation , Volume 69 , Issue 6 , November 2016 , pp. 1197 - 1214
Copyright
Copyright © The Royal Institute of Navigation 2016 

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