description SS Mont-Blanc Overview
SS Mont-Blanc was a French freighter built in Middlesbrough, England, and requisitioned by the French government to transport munitions during World War I. On December 6, 1917, the ship collided with the Norwegian vessel SS Imo in Halifax Harbour, Nova Scotia, Canada. The impact ignited the cargo of high explosives, causing a massive detonation that devastated the city of Halifax, killing approximately 2,000 people and injuring thousands more. The event is recognized as one of the largest artificial non-nuclear explosions in history.
insights Ranking position
SS Mont-Blanc ranks #12 of 186 in the Shipwreck ranking, behind MV Estonia, ahead of SS Cap Arcona.
help SS Mont-Blanc FAQ
What cargo made the SS Mont-Blanc explosion so destructive?
Mont-Blanc was carrying a mixed wartime cargo that included explosives and flammable materials bound for Europe. After its collision with SS Imo, a fire reached the cargo and produced the Halifax Explosion.
Why did the Mont-Blanc collide with the Imo?
The ships encountered each other in the Narrows of Halifax Harbour on 6 December 1917 amid disputed maneuvers and signaling. Imo struck Mont-Blanc's bow, and the collision started the fire that preceded the explosion.
How long was there between the collision and the Halifax Explosion?
Mont-Blanc burned and drifted toward the Halifax waterfront for roughly 20 minutes before exploding. That interval allowed some people to flee, but it also drew spectators toward windows that shattered in the blast.
What happened to SS Imo after the explosion?
The blast drove Imo ashore on the Dartmouth side of the harbour, but the ship was later repaired. It returned to service under the name Guvernøren and was wrecked near the Falkland Islands in 1921.
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