Two Fires on Chicoutimi?
According to this article from The Scotsman, there were actually two fires on HMCS Chicoutimi; a major electrical fire near the Captain's stateroom, and another smaller fire near the oxygen generator. My experience has always been that any fire near the oxygen generator would be enough to make me soil my poopy suit (scroll down to "p" in the linked article); the thing isn't generally referred to as "The Bomb" for nothing. (Although the oxygen is bad enough, an oxygen generator works be electrolysis of water, so hydrogen gas is a by-product of the process...)
Update: Check out this story from the Toronto Star, detailing the amazing rescue of a Canadian submariner by a Brit diver while they were hooking up the tow rope.
New Update: This article in the Globe and Mail has the best report I've seen to date of the timeline of the casualty. (Not sure how long it will last before it requires a subscription to see.) It appears the 2nd fire didn't start until several hours after the initial fire was out, and was in a portable "oxygen generator". Also, it looks like the initial fire was due to a really bad electrical ground... possibly some electrical bus bar that hadn't been tightened carefully came loose due to the rocking of the ship as it traveled through the waves...
Before the dive could take place, there were lengthy checklists to complete. In the control room, Captain Luc Pelletier navigated the vessel into its allocated water, the submarine equivalent of air-traffic control. In the motor room, an instrument-filled chamber in the stern that houses the sub's twin electric motors, one of the crew noticed a warning light flashing. It was a ground fault, not an urgent concern, but it had to be resolved before the 57 men could head under water. It was 10:30 a.m. The dive was scheduled for 4 p.m.
"We were chatting in the mess, and I started hearing a loud noise -- a popping sound, like popping popcorn," MS Speirs said yesterday from his hotel room in Glasgow. He and his shipmates, back on land after their deadly five-day ordeal of fire, smoke, water and waves, spoke to reporters for the first time from the hotel in Glasgow where they are recuperating and awaiting an inquiry into the British-built subs.
"I looked at the other guys and said, 'What is that?' A second after that, an alarm went off and they said there's a fire in the commanding officer's room. And then I saw a guy running through, and there were sparks coming after him the size of golf balls."
Not far behind that panicked man was a rolling wave of thick, black smoke that rose to his knees, then his waist, and within seconds had engulfed the entire deck.