Determination of Transverse Stability Properties of Yachts between 20 and 60 m in Length during Concept Design Stage by Employing Residual Stability Method

Year 2017, Issue: 208, 45 - 61, 11.07.2017

Erdinç Açıkel Ahmet Dursun Alkan

Abstract

Consistent determination
of unknown values ​​based on statistical data at the concept design stage is a
widely used approach. It is clear that the determination of the main dimensions
and capacities of the ships in the conceptual design phase at an acceptable
accuracy is decisive for the success of the next stages of the design as well
as the bid preparation. For yachts, the main dimensions, areas and volumes of
the decks forming the top building besides the main values ​​such as ship size,
width and depth directly affect the external design features and cost levels of
such special boats.

In the concept design
phase, for example in the modeling of a characteristic such as stability, the
minimization of the design variables to be used as much as possible gives the
naval architect the ease of operation and the ability to control these variables
more freely.

In summary, it is aimed
to present a simple and useful approach to the naval architect, which can be
used during the conceptual design stage of mega yachts and yield an error level
as low as possible. The resulting formula obtained from the method developed in
this paper is given as follows:

For Φ ≤ 30^o: C_RS
. 10³=



















     

For Φ > 30^o:
C_RS . 10³= 

Keywords

Superstructure, concept design, residual stability, mega yacht

References

• Amy, J.R., Johnson, R. E., Miller, E. R., "Development of Intact Stability Criteria for Towing and Fishing Vessels," Marine Technology, SNAME.
• Barrass, B., Derrett, D.R., (2006). Ship Stability for Masters and Mates, ISBN: 9780080460086.
• Bartholomew, C.A., Marsh, B., Hooper, R.W. (1992). U.S. Navy Salvage Engineer's Handbook, Vol 1, Naval Sea Systems Command.
• Biran, A.B., (2003). Ship Hydrostatics and Stability, ISBN: 978-0-7506-4988-9.
• Brown, A. J. and Deybach, F. (1998), Towards A Rational Intact Stability Criteria For Naval Ships. Naval Engineers Journal, 110: 65–77. doi:10.1111/j.1559-3584.1998.tb02386.x.
• Bureau Veritas, (2012). Rules for the Classification and the Certification of Yachts.
• Deybach, F., (1997). Intact Stability Criteria for Naval Ships, Master Thesis, MIT Dept. of Ocean Engineering.
• IMO Res. MSC.267(85), (2008). Intact Stability Code.
• Korteweg, J.A., (1984). Geometry and Stability. Report no. 516-K, TU Delft.
• Krishna Rao, A. V. (1979). "An Approximate Method for Finding Maximum KG to Satisfy the IMCO Intact Stability Criteria, The Naval Architect, no. 6, London.
• Rawson, K., Tupper, E., Basic Ship Theory, vol. 1, Longman, Inc., 1983.
• Perunovic, J.V., (2009). Ship Dynamic Intact Stability Focus on Parametric Roll. Technical Report, Technical University of Denmark.
• Prohaska, C.W., (1947). “Residuary Stability”, Transactions of Institution of Naval Architects.
• Prohaska, C.W., (1951). “Influence of Ship Form on Transverse Stability”.
• Rahola, J. (1939) "The Judging of the Stability of Ships and the Determinationof the Minimum Amount of Stability", PhD Thesis, Helsinki.
• Sebastian, J.W., (1997). Parametric Prediction of the Transverse Dynamic Stability of Ships, Master Thesis, Naval Postgraduate School, Monterey.
• Wolfson Unit (Maritime ve Coastguard Agency), (2007). Intact Stability Severe Wind and Rolling Criterion- An Equivalent Standard.