Dynamics of a Rigid Ship

Research output: Book/ReportCommissioned report


The approach to ship dynamics presented in the book makes it possible to deal with the seemingly different problems such as ship maneuvering, sea-keeping and dynamic stability using the same unified mathematical model. Motion dynamics of a ship regarded as a rigid body in a general motion with six-degree-of-freedom is considered. The relation of non-linearities of the applied sub-models to the physical phenomena associated with the ship behavior is discussed. Surface wave theory is presented. Non-linearities associated with surface waves are discussed. Realization of the unified mathematical model in a form of simulation tool, called LaiDyn, is discussed and examples of its applications are shown. Mathematical model for assessing internal hull girder loads is presented briefly. An un-symmetry of internal loads, visible as different maximum values of sagging and hogging, is presented and the origins of it are discussed.
Original languageEnglish
Number of pages147
Edition2. corrected ed.
ISBN (Electronic)978-952-60-7262-3
Publication statusPublished - 2017
MoE publication typeD4 Published development or research report or study

Publication series

NameAalto University publication series SCIENCE + TECHNOLOGY
ISSN (Electronic)1799-490X


  • ship ddynamics
  • wave loads
  • sea-keeping
  • maneuvering


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