Ah - the CBC article says it was a combination “a meticulous review of data and artifacts” from the seabed, high-resolution photos and video, along with sonar measurements.
And the CBC article mentions they had several dives to the wreck, before the winter closed in.
Prime Minister announces that there will be further dives, starting next month:
Franklin expedition’s HMS Erebus to be examined by dive teams in April
I don’t envy them diving in the Arctic in April; there will still be ice on the water.
Thanks for the update. Hope they’re dressed very warmly.
They’re Canadians. They oughta be able to do the dives naked, except it wouldn’t be polite.
Updating this thread:
I can’t wait to see pictures.
Funny, that was the first thing I thought…
Some video:
The ship is shown starting about 1 minute and a half into the video.
Came to bump this with the discovery of the Terror, glad to see you’re already on it! Who’da thunk they’d find it in Terror Bay? 
Some interesting conclusions -
“This discovery changes history,” he told the Guardian. “Given the location of the find [in Terror Bay] and the state of the wreck, it’s almost certain that HMS Terror was operationally closed down by the remaining crew who then re-boarded HMS Erebus and sailed south where they met their ultimate tragic fate.”
Fascinating. Thanks for keeping us posted.
So they just need the Queen of Canada to talk to the Queen of Britain, then?
They are not amused.
But we are.
Here is an interesting article on the steam engines and the severe lead poisoning the expedition members suffered from.
FYI - The ships’ names would have been inscribed on their respective bells so identification should have been pretty easy.
Another interesting tidbit was the discovery of one of the ship chronometers a few years back - it has historians pretty baffled.
I wonder how many chronometers will be found in the wreck.
That answer partly depends on how many the expedition members took with them (for whatever reason - they took some pretty strange things with them (most likely due to impaired judgement from the lead poisoning) when they abandoned the ships) . I haven’t read of any being discovered among the artifacts and bodies that have been found - but I know not all of the expedition members have been accounted for over the years - although some remains might be found on the ships.
Bumped.
See the second new show mentioned here: Return of 'Roseanne' and premiere of 'The Terror' among top TV viewing choices (videos) - cleveland.com
The Roseanne story arc getting into the rumours of cannibalism woven into the cognitive effects from ingesting too much lead? 
Bumped.
New video from inside Terror.
(I’m not sure what the mobile link does to you computer or tablet people.)
Are those intact China plates? And bottles! Wow.