The Onedin Line (TV Series 1971) | Blockade (S01-E14)

Episode 14: James is delivering a cargo to the Southern states of America but the Civil War is raging and the North are blockading ports. With him are Anne, who dislikes the idea of helping slave-owning states to profit, and Albert. A nervous pilot is not keen to run the blockade so James decides to run it himself. He is captured by Captain Ferguson, a Northern captain but fortunately for him Ferguson has a great enthusiasm for steam-ships, and, impressed by Albert's plans for a new steam vessel, the 'Golden Nugget', not only allows James to go about his business but defects to join Albert.

Episode 15: https://rumble.com/v54h2k0-the-onedin-line-tv-series-1971-winner-take-all-s01-e15.html