The Onedin Line (TV Series 1971) | Mutiny (S01-E11)

Episode 11: It appears that a mutiny has occurred on a ship James chartered but the crew explain that there was no mutiny, the captain had gone mad and they were taking the ship over in order to act for the best. James discovers that Kirkwood is indeed mad, a religious zealot, claiming people are out to kill him. He eventually hangs himself after trying to sink the ship and James makes sure that the crew are all acquitted of any mutiny charges.

Episode 12: https://rumble.com/v54at9r-the-onedin-line-tv-series-1971-cry-of-the-blackbird-s01-e012.html