Eastcliffe Hall was a Great Lakes bulk carrier which sank in the Saint Lawrence Seaway on the morning of 14 July 1970 with the loss of nine crewmen and family members.

On her last voyage, Eastcliffe Hall sailed southwest on the Saint Lawrence River from the port of Sorel, Quebec, bound for Saginaw, Michigan, under the command of Captain Richard Groulx, with a cargo of 5,661 long tons (5,752 t) of pig iron ingots and 21 crewmen and family members aboard.

[1] The ship sank near Morrisburg, Ontario, in three minutes in about 70 feet (21.3 m) of water with the loss of the captain, his son Alain, and seven others, including engineer William Demers, his wife Jacqueline, and their six-year-old daughter Nathalie.

[2] Two of the surviving crew members reported that the ship sank so fast that the inrush of current compressed the air in the engine room so much that it blasted them through a hole in the skylight.

This was concluded by chemist John Howes, employed by the Centre for Forensic Sciences, University of Toronto, who conducted the testing and informed the inquiry of the high alcohol content in the captain's body.