Review of Surface Ship Fleets – Ice-Classed Ships


  1. Greenwood, N.
  2. Snider, D.
  3. Paulson, G.
Corporate Authors
Defence Research and Development Canada, Centre for Operational Research and Analysis, Ottawa ON (CAN);International Safety Research Inc, Ottawa ON (CAN)
This project attempts to characterize and quantify the global fleet of ice-capable ships. It does this through a brief review of the history of polar navigation and the processes of classifying ships for safe operation in ice, arriving at a notional scale of equivalence for different current and historic classification schemes. Using search terms related to different levels of ice-capability, the project extracted from the Seaweb Ships Online (SW) database of over 200,000 ships some 11,000 ships that are characterized as “ice-capable.” This list was reconciled with various other available global lists of icebreakers. The noted iceclassification of each ship was related to the Canadian scale of ice-capability under the Arctic Shipping Safety Pollution Prevention Regulations to give a common point of reference for ships that can legally and safely go “into the ice". Some brief analysis of the list and the recent record of Northwest Passage voyages was conducted to qualify the coverage in terms of ice-capable ships missing from the list and ships/yachts that may choose to transit the NWP under Zone-Date regulations with no ice-class at all. The report concludes that while the list can be used as a guide to ships that can operate in heavier ice conditions of the Canadian Arctic (i.e. Thick First year Ice and heavier), it is not altogether predictive as many ships with lower ice classes will not have reason to depart their normal areas of operation (e.g. Ice-classed Baltic f

Il y a un résumé en français ici.

ADSA;Maritime Surface;Ice capable vessels;Commercial fleet review
Report Number
DRDC-RDDC-2018-C083 — Contract Report
Date of publication
01 May 2018
Number of Pages
Electronic Document(PDF);CD ROM

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