The list of shipwrecks in 1917 includes some ships sunk, foundered, grounded, or otherwise lost during 1917.
Halifax Explosion: The cargo ship collided with Mont-Blanc ( France) at Halifax, Nova Scotia, Canada. Mont-Blanc caught fire and was obliterated in a massive explosion that killed approximately 2,000 people and drove Imo ashore. Imo subsequently was refloated, repaired, and returned to service.