The Onedin Line (TV Series 1971) | Plain Sailing (S01-E02)

Episode 2: On the return trip from Portugal James teaches Anne the rudiments of navigation. This comes in useful when James and several other crew members become seriously ill, due to rotten meat provided by Robert and which Anne throws overboard. Despite superstitious views that a woman on board brings bad luck, Anne works with the illiterate sailing master Captain Baines to read the charts and brings the ship safely home to Liverpool, where Robert is made to compensate the sick crew and Anne agrees to teach Baines literacy. Elizabeth is torn between two suitors, young sailor Daniel Fogarty and the dandified shipyard owner's son Albert Frazer.

Episode 3: https://rumble.com/v53jpx3-the-onedin-line-tv-series-1971-other-points-of-the-compass-s01-e03.html