Analysis of inherent course stability of a high-speed catamaran in deep and shallow water

Article type: Research Article

Authors: Milanov, Evgeni | Zlatev, Zlatko^; | Chotukova, Valya | Stern, Frederick

Affiliations: Bulgarian Ship Hydrodynamics Centre, Varna, Bulgaria | IIHR-Hydroscience and Engineering, The University of Iowa, Iowa City, IA, USA

Note: [] Corresponding author: Zlatko Zlatev, Bulgarian Ship Hydrodynamics Centre, 9003 Varna, Bulgaria. Tel.: +359 052 370506; Fax: +359 052 370514; E-mail: [email protected].

Abstract: The paper treats the important problem of prediction of ship's inherent course stability, based on a large amount of model experimental data for a well-known bare hull shape – the Delft catamaran 372, covering a comparatively wide range of Froude numbers and depth to draught ratios. The analysis is based on a linearized maneuvering model. As a result, dependency of the stability criterion on Froude number and the water depth to draught ratio is established and clearly demonstrated for this particular ship case.

Keywords: High-speed catamaran, maneuvering, course stability, shallow water, Delft catamaran 372

DOI: 10.3233/ISP-2011-0070

Journal: International Shipbuilding Progress, vol. 58, no. 2-3, pp. 83-96, 2011