HALIFAX — 1917 · Major Tragedy

The Halifax Explosion

ClosedSources: ALast updated: 14 October 2026

On the morning of 6 December 1917, during the First World War, the French cargo ship Mont-Blanc, loaded with explosives, collided with the Norwegian vessel Imo in the Narrows of Halifax Harbour. The fire that broke out on the Mont-Blanc turned into an enormous explosion at 9:04, one of the largest man-made explosions before nuclear weapons. The Richmond district in the city's north end was largely destroyed; at least 1,782 people died and about 9,000 were injured. A blizzard the next day hampered rescue efforts. The first inquiry blamed the Mont-Blanc, but higher courts found both ships at fault. Boston's relief effort is still commemorated every year with a Christmas tree.

Date
1917
Place
Nova Scotia, Canada, Halifax, CA
Category
Major Tragedy
Case Status
Closed
Coordinates
44.6690, -63.6070 ↗

Timeline of Events

  1. 6 December 1917, 8:45 amThe Mont-Blanc and the Imo collided in the Narrows.
  2. 6 December 1917, 9:04 amThe Mont-Blanc exploded, levelling Richmond.
  3. 7 December 1917A blizzard hampered rescue work.
  1. 1918The first inquiry blamed the Mont-Blanc.
  2. 1919–1920Higher courts held both ships at fault.

Sources

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🕯️ This record was prepared with respect, in memory of those who lost their lives.