2017
DOI: 10.1080/17445302.2016.1265883
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Numerical investigation of the landing manoeuvre of a crew transfer vessel to an offshore wind turbine

Abstract: Crew transfer vessels are a fast and cost-effective means of transportation to bring service personnel and technical equipment to an offshore wind turbine. The landing manoeuvre of such service vessels is a complex coupled process involving the ship's motion in the seaway and the frictional contact between the fender and the boat landing. With the help of numerical simulations, we aim to identify the limit conditions under which a safe crew transfer can still be ensured, and to investigate innovative transfer … Show more

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Cited by 11 publications
(6 citation statements)
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“…We assume the friction coefficient between boat fender and floater boat landing to be the ratio of the hull wave-induced vertical forces by the sum of the hull waveinduced horizontal forces and propeller thrust [4]. The Catamaran (CAT) CTV used is a twin Wigley hull, based on Hamburg Facility (HSVA) model tank test [5].…”
Section: Methods Description 21 Assumptionsmentioning
confidence: 99%
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“…We assume the friction coefficient between boat fender and floater boat landing to be the ratio of the hull wave-induced vertical forces by the sum of the hull waveinduced horizontal forces and propeller thrust [4]. The Catamaran (CAT) CTV used is a twin Wigley hull, based on Hamburg Facility (HSVA) model tank test [5].…”
Section: Methods Description 21 Assumptionsmentioning
confidence: 99%
“…Where tT and tN are the time phase corrections required to get the calculated wave vertical and horizontal forces T(t) and N(t) on Wigley hull in phase with the HSVA real hull test results [4] [5]. Fig.…”
Section: Main Deck Water Ingress Calculationmentioning
confidence: 99%
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“…This contact is maintained through a steady thrust from the CTV motor throughout crew transfer. If the hydrodynamic force incident on the vessel overcomes the frictional force, the CTV can experience slippage, during which the vessel loses contact with the turbine or undergoes unanticipated motion (Josse et al, 2011;König et al, 2017;Edesess et al 2017). When vessel slippage occurs, the repair workers are in potential danger and the possibility exists of additional economic losses due to incomplete repairs.…”
Section: Introductionmentioning
confidence: 99%
“…Previously, Josse et al (2011) presented a mechanical system in which the hydrodynamic forces were ignored and the angle of the vessel against the monopile was the only parameter assumed to affect the frictional contact. However, König et al (2017) emphasised the necessity of calculating the hydrodynamic forces within the wave field to improve the determination of wave loading on the vessel. This study assumed that hydrodynamic forces have the largest effect on the frictional contact and an approximation for the diffracted wave height as a function of wave length was derived but no attempt was made to extend the calculations to quantify the local water particle kinematics within this region.…”
Section: Introductionmentioning
confidence: 99%