Variation of parameters determining seakeeping

Article type: Research Article

Authors: Beukelman, W. | Huijser, A.

Affiliations: Delft University of Technology, Ship Hydromechanics Laboratory, Delft, The Netherlands

Abstract: With the computerprogram “Trial” calculations have been carried out to determine the seakeeping qualities in head waves of systematically varied shipforms. These ships were derived from the well-known “Todd-60” series. The following varied parameters show in succession of importance the influence on ship motions etc.: ship-length, speed, forebody section shape, block-coefficient, position of the centre of buoyancy in length, radius of inertia. Pitch especially decreases with ship-length, while heave increases with speed. For V-shaped forebodies the heaving motion is strongly reduced, while there is an advantage in added resistance up to a certain ship length, which depends on speed and sea-condition. Above this length a small profit for U-shaped sections has been established with respect to the added resistance in waves.

DOI: 10.3233/ISP-1977-2427501

Journal: International Shipbuilding Progress, vol. 24, no. 275, pp. 171-186, 1977