The Impact of Different Bow Shapes on Large Yacht Comfort

Journal Article (2023)
Author(s)

E. Begovic (Università degli Studi di Napoli Federico II)

Enrico Della Valentina (Maritime Research Institute Netherlands (MARIN))

F. Mauro (TU Delft - Ship Design, Production and Operations)

Radoslav Nabergoj (Nasdis PDS d.o.o.)

B. Rinauro (Università degli Studi di Napoli Federico II)

Research Group
Ship Design, Production and Operations
Copyright
© 2023 Ermina Begovic, Enrico Della Valentina, F. Mauro, Radoslav Nabergoj, Barbara Rinauro
DOI related publication
https://doi.org/10.3390/jmse11030495
More Info
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Publication Year
2023
Language
English
Copyright
© 2023 Ermina Begovic, Enrico Della Valentina, F. Mauro, Radoslav Nabergoj, Barbara Rinauro
Research Group
Ship Design, Production and Operations
Issue number
3
Volume number
11
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Abstract

The importance of comfort during transfer and stationing becomes a key performance parameter for large yacht design, on the same level as propulsive issues. Such a matter extends questions in terms of form and service demand to the motion behaviour of the unit in waves. Relevant studies refer to outdated hull forms not specific to modern large yachts. In this study, five hull forms with different bow concepts represent the most common design solutions for yachts at constant draught and displacement. The preliminary ranking on the effect of alternative bows on comfort requires the definition of internationally accepted comfort standards. Here, the AWI 22834 guidelines for large yachts provide the service and environmental conditions and criteria for the comfort analysis, being the only reference specific to yachts. The calculations employ a strip-theory-based numerical model to provide results of easy understanding for designers during the early design stage. The obtained ranking among the design solutions on a reference large yacht favours the option nested with a bulb, contradicting the expectations in favour of a vertical bow concept. The discussion and conclusions provide a way forward for additional analyses and investigations aimed at proposing suitable multicriterial design guidelines for large yachts. However, the results also show the unsuitability of AWI environmental and encounter conditions for hull form ranking.