Not related to the Canadian aspect of the thread but I didn't think it rated starting a new thread.

Shortly after the Indian Ocean Tsunami an American sub ran full-tilt into an underwater mountain or ridge which was not on the chart they had used for navigation. 98 out of 137 crew were injured, one man died.

The sub was underway at high speed following a course laid out for them and sent to them. Of course, the Captain of the ship is responsible for everything that happens, and as it happens there were other, unused, charts available, at least one of which showed some kind of obstruction or danger in the neighborhood of the mountain. Apparently they took a sounding and found the sea was 6000 feet deep which was what they expected. But it wasn't enough to keep them from a major accident and almost losing the ship.

The story turned up in today's (Wednesday's) New York Times and the Captain was interviewed on Sixty Minutes II this evening.

Here is a link to the NYT article.

Adrift 500 Feet Under the Sea, a Minute Was an Eternity