Sean thanks for the info,
as far as your question as to which port you might want to look at a map of the world with distance on it.
BATUS is nearer the sea on the west coast than it is on the east coast of Canada, this is not a small country as I found out when I first came here.
The movement of the vehicles and equipment was in some years done by Royal Fleet Auxiliary but I think the distances and costs soon made it something that was tendered out.
Yes, some years kit went through Vancouver but more often these days it goes through Montreal and then by road and rarely by rail these days. The freight industry has become so cut throat.
Here are some videos of BATUS kit on trains, you will note the passenger car behind the Challengers for obvious reasons.
No clue on that top string about Vancouver?
Robin