Abstract
Selection of suitable ice class for ships operation is an important but not simple task. The process of selecting an appropriate ice class is of high importance both from a safety as well as an economical perspective, but the selection process is still based on accumulated experience and traditions within the areas of existing operations. The increased exploitation of the Polar waters, both seasonal periods and geographical areas, as well as the introduction of new international design standards such as Polar Code, reduces the relevancy of using existing experience as basis for the selection, and new methods and knowledge have to be developed. This paper will critically review the current knowledge of applying risk based design methodologies for ice covered waters. To illustrate the current best practice, the new polar code and especially the new Polar Operational Limit Assessment Risk Indexing System (POLARIS) is applied for two vessels: one navigating independently in the Antarctica (SA Agulhas II) and one navigating with icebreaker assistance on the Kara Sea on the Russian Arctic (MT Uikku) to evaluate the suitable ice class for these waters. It is found the PC 3 is the most suitable ice class for ships navigating in harsh Antarctic ice conditions and PC 6 is enough behind an icebreaker on the Kara Sea during hard winter conditions.
| Original language | English |
|---|---|
| Title of host publication | POAC 2019 - 25th International Conference on Port and Ocean Engineering under Arctic Conditions |
| Publisher | International Conference on Port and Ocean Engineering under Arctic Conditions |
| ISBN (Print) | 978-1-5108-8928-6 |
| Publication status | Published - 2019 |
| MoE publication type | A4 Conference publication |
| Event | International Conference on Port and Ocean Engineering under Arctic Condition - TU Delft, Delft, Netherlands Duration: 9 Jun 2019 → 13 Jun 2019 Conference number: 25 |
Publication series
| Name | Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC |
|---|---|
| Volume | 2019-June |
| ISSN (Print) | 0376-6756 |
| ISSN (Electronic) | 2077-7841 |
Conference
| Conference | International Conference on Port and Ocean Engineering under Arctic Condition |
|---|---|
| Abbreviated title | POAC |
| Country/Territory | Netherlands |
| City | Delft |
| Period | 09/06/2019 → 13/06/2019 |
Funding
The work was funded by the Finnish Funding Agency for Technology and Innovation (Tekes), Academy of Finland, and the Lloyd?s Register Foundation. The Lloyd's Register Foundation supports the advancement of engineering related education, and funds research and development that enhances the safety of life at sea, on land, and in the air. Their financial support is greatly acknowledged. In addition, all the partners of the Tekes project NB1369 PSRV full-scale ice trial, namely the University of Oulu, University of Stellenbosch, Aker Arctic, Rolls-Royce, STX Finland, W?rtsil?, and the Department of Environmental Affairs (South Africa), and Finnish Meteorological Institute, as a partner of the Academy of Finland project called ANTLOAD, are gratefully acknowledged. Also the financial support of TRAFI is acknowledged with pleasure.
Keywords
- Full-scale measurements
- Ice load
- Polar Code