Estimating operability of ships in ridged ice fields
Research output: Contribution to journal › Article › Scientific › peer-review
- Finnish Geospatial Research Institute
- Gdynia Maritime University
A comprehensive sensitivity analysis was performed to gain insight into the model and identify possible problematic parameters. The sensitivity analysis covered both the ice conditions and modelling assumptions.
Two data-sets were used to test the simulation method. One set included the depth profile of sea ice, machinery data and the speed of a ship operating in ridged ice. The resistance method was able to predict the mean speed over 3km well. The second data-set consisted of a history of ship's speeds and positions from AIS data and ice conditions estimated by a numerical ice model HELMI, developed in the Finnish Meteorological Institute. Observed mean speeds were mostly well within the distributions of mean speeds simulated by the transit simulation model. Predictions of independent operation were also promising.
|Number of pages||11|
|Journal||Cold Regions Science and Technology|
|Publication status||Published - Mar 2017|
|MoE publication type||A1 Journal article-refereed|
- Winter navigation, Ridged ice, Ship's performance, Transit simulation, Statistical simulation, Sensitivity analysis