Equivalent standard manoeuvres for pod-driven ships

Maciej Reichel

doi:10.1016/j.oceaneng.2019.106165

Equivalent standard manoeuvres for pod-driven ships

Abstract

Procedures for carrying out the manoeuvring tests presented in International Maritime Organisation (IMO) resolution MSC.137(76) are based on the capabilities of ships with conventional steering-propulsion systems. Therefore they do not correspond to ships with other steering-propulsion devices, like pod drives. IMO is aware of this shortcoming and for ships with non-conventional steering and propulsion system may permit the use of comparative steering angles to the rudder angles specified by the resolution. To elaborate these comparative angles for pod-driven gas carrier, experiments with free-sailing manned model have been carried out. For comparison two sister ships have been taken into consideration, i.e. twin-pod and twin-propeller twin-rudder configurations. For both ship versions, manoeuvres according to standard IMO procedures have been carried out. For twin-pod configuration, additionally manoeuvres with various pod propulsor settings have been performed to find the comparative, i.e. rudder-equivalent pod propulsor angles. Results show an obvious fact, that for twin-pod ship version similar results of standard manoeuvre parameters, as for twin-propeller twin-rudder version, are obtained for other than IMO recommended 35° steering angle. It is shown that, for turning circle parameters, a single comparative or rudder-equivalent angle does not exist. Various turning circle parameters are obtained for different pod propulsor angles.

Citations

7

CrossRef
0

Web of Science
8

Scopus

Author (1)

Maciej Reichel dr inż.

Cite as

Full text

full text is not available in portal

full content of the article see on external site open in new tab

Keywords

Details

Category:: Articles
Type:: artykuły w czasopismach
Published in:: OCEAN ENGINEERING no. 187, pages 1 - 11,
ISSN: 0029-8018
Language:: English
Publication year:: 2019
Bibliographic description:: Reichel M.: Equivalent standard manoeuvres for pod-driven ships// OCEAN ENGINEERING -Vol. 187, (2019), s.1-11
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.oceaneng.2019.106165
Verified by:: Gdańsk University of Technology