Assessment of Seakeepability

Abstract

This paper attempts to apply presently available knowledge of ship model behavior in regular waves to the prediction of trends of ship performance in realistic irregular wave patterns. Performance is studied in the terms of tendency to ship water forward and to slam, and of magnitude of heaving accelerations. The variables of particular interest considered are severity of sea, ship speed, ship heading, and hull proportions. It is believed that the trends obtained in this exploratory project should provide the naval architect with some guidance in the selection of basic hull characteristics for one particular type of ship (in this case, the single-screw dry-cargo ship). The results should also be of assistance in planning further systematic research.