Boblo Boats: A Detroit Ferry Tale (2018) on Netflix

Plot summary

For generations, Detroiters crossed the water to Boblo Island aboard the steamship Ste. Claire, which served the amusement park for more than 85 years. The island sits in the waters between the United States and Canada. Now the vessel is threatened with ruin, and three people take up its cause: a doctor, a psychic and a fan of the old park who want to pull the ship back from the scrapyard. The documentary follows their campaign, tracing the local lore and mythology that grew up around the crossing and examining how the history of parks like Boblo has been whitewashed over time.