Hydrodynamic development of Inclined Keel Hull-resistance

The ‘Inclined Keel Hull’ (IKH) configuration has been applied to small vessels such as fishing and tug boats to improve their pulling power; however, there is no application of this concept to large vessels as explored in this paper. The IKH requires a hull form to be modified by introducing an angl...

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Bibliographic Details
Published in:Ocean engineering 2012-06, Vol.47, p.7-18
Main Authors: Seo, K.C., Atlar, M., Sampson, R.
Format: Article
Language:English
Subjects:
A large propeller diameter
Applied sciences
Draughts
Energy saving
Exact sciences and technology
Green house gas emission
Ground, air and sea transportation, marine construction
Hulls
Hulls (structures)
Inclination
Inclined Keel Hull
Keels
Marine
Marine and water way transportation and traffic
Marine construction
Numerical analysis
Propellers
Vessels
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Summary:The ‘Inclined Keel Hull’ (IKH) configuration has been applied to small vessels such as fishing and tug boats to improve their pulling power; however, there is no application of this concept to large vessels as explored in this paper. The IKH requires a hull form to be modified by introducing an angle of inclination to the keel of a vessel, which results in a smaller draught at the bow and a deeper draught at the stern. This angle of inclination allows a larger propeller diameter and hence a more efficient propeller to be installed. One of the key design requirements of the IKH to meet this goal is to minimise the potential resistance penalty that may be caused by the introduction of the keel inclination. This aspect allows designers to fully capitalise on the expected performance gain associated with a larger diameter propeller installed on an IKH vessel. The paper is based on the recently completed postgraduate study, (Seo, 2010), for the development of a 3600 TEU Container ship with an inclined keel and its further validation for the bare hull resistance analysis by using advanced numerical analysis and large scale model tests as part of an ongoing collaborative EU research project, (STREAMLINE, 2010). ► We introduced an inclined keel concept to install a larger propeller diameter. ► We examine the selection of reference vessel and hull form development of IKH. ► The developed IKH will increase quality if hydrostatic particulars are similar. ► The developed IKH will increase quality if the resistance are similar. ► The full advantage of IKH with increased propeller depend on the quality of hull form quality.
ISSN:0029-8018
1873-5258
DOI:10.1016/j.oceaneng.2012.03.008