ABSTRACT

The ice concentration and floe size distribution are important ice parameters in ice-structure analyses. Before performing an analysis in full scale, model-scale experiments are typically conducted to verify the structural engineering design and to parameterize numerical models and equations. In ice engineering, this is done in an ice model basin, where sea ice dimensions and properties are scaled down using a sophisticated freezing process and chemicals to ensure as accurate representation as possible of the sea ice in its smaller model scale. The chapter presents a series of model-scale experiments that were conducted for Dynamic Positioning of ship-shaped floaters in ice. These were carried out in the ice tank at the Hamburg Ship Model Basin in the summer of 2011. In these experiments, the behavior of two different vessels in a broken-ice field was studied, and it allowed for the testing of relevant image processing algorithms.