When the French captain and his crew are arrested, the Mountie determines that the captain is lying about being from Montreal by asking him who won last week's hockey game between Montreal and Toronto. When the captain guesses "Montreal", the Mountie draws his gun and says it was actually Detroit. This dialogue seems to be referring to the National Hockey League, which was formed the same year of the Halifax Explosion. Toronto and Montreal would have had NHL teams at that time, but Detroit didn't enter the league until 1926. (Although Detroit is known as an "Original Six" team, this actually refers to the six teams that comprised the NHL for several decades; the NHL was originally an all-Canadian league for back in 1917, there were no American hockey teams with the league.)