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A comparison of stopping modes for pod driven ships

Lookup NU author(s): Professor Michael Woodward, Professor Mehmet Atlar, Dr David Clarke


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Conventionally, the stopping of a ship is achieved by direct reversal of propeller rotation. However, the introduction of azimuthing pods presents other options. The following study examines the various modes that may be employed to stop a pod driven ship. A continuous function is derived describing the hydrodynamic forces on both the propeller and pod body for any load condition and helm angle; including fluid damping and added mass effects. The proposed function is validated through comparison with comprehensive open water model tests. Next, a time domain simulation algorithm is proposed to examine the dynamic effects including the mass inertia on both the propeller shaft and slewing stock. Finally, a simulation study for the proposed stopping modes is performed using a known design as case study; results and discussion are presented.

Publication metadata

Author(s): Woodward MD, Atlar M, Clarke D

Editor(s): Atlar, M.

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: First International Conference on Technological Advences in Podded Propulsion - T-POD

Year of Conference: 2004

Pages: 339-354

Publisher: School of Marine Science and Technology