Continuity mistake: Despite Henry's issue from "Coal" in Season 1 being resolved after the crash in "The Flying Kipper", also in Season 1, Henry needed special coal again from "Thomas and the Magic Railroad" until Season 16.
Thomas the Tank Engine & Friends (1984)
Episode list - season 9
Starring: Alec Baldwin, Michael Brandon, Ben Small, Martin Sherman, Michael Angelis
More mistakes in Thomas the Tank Engine & Friends
Bill and Ben: We're not playing. We're rescuing our trucks.
Trivia: The events of this episode were remade in CGI for the 2015 special, The Adventure Begins.
Question: Why was Henry put on a barge instead of being taken to the works?
Answer: He was in the water.