Mr. Chair, I'm not sure we did as detailed an analysis as Dennis is recommending or is asking in terms of each ship and what they would do. What we did find was that they're on average 30 years old, that we plan to extend the operation of five of the vessels by anywhere from eight to fifteen years, and that there are no other icebreakers of equal capability to replace the vessels undergoing retrofit.
I don't know if we looked at every single icebreaker and what services it provides.
Kim, can you add to that?