Abstract
The concept of surf-riding in irregular seas is investigated and two calculation schemes are implemented in order to establish upper and lower bounds of the probability of surf-riding. The first scheme extrapolates from the concept of surf-riding in regular seas and is product of analysis of system dynamics. Points of the phase-space that could be considered as the counterparts, for irregular sea, of the conventional surf-riding equilibria are targeted. Due to the time-varying nature of the considered phase-space however, these points exist only temporarily, emerging and later vanishing at random time instants. The second scheme is more empirical, targeting time intervals of ship motion where the speed remains above the expected range. We call such behavior a “high run”. The probability values obtained by the two schemes are compared against each other and conclusions are drawn.
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Acknowledgements
This work has been funded by the Office of Naval Research under Dr. Ki-Han Kim and by the Office of Naval Research Global (grant number N62909-13-1-7) under Dr. Woei-Min Lin. The project was administered at the University of Strathclyde. This support is gratefully acknowledged. The authors acknowledge also the contribution of Dr. Vadim Belenky of David Taylor Model Basin with whom there had been continuous scientific interaction in this research work.
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Spyrou, K.J., Themelis, N., Kontolefas, I. (2023). Estimates of the Probability of Surf-Riding in Irregular Seas. In: Spyrou, K.J., Belenky, V.L., Katayama, T., Bačkalov, I., Francescutto, A. (eds) Contemporary Ideas on Ship Stability. Fluid Mechanics and Its Applications, vol 134. Springer, Cham. https://doi.org/10.1007/978-3-031-16329-6_23
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