In imdb, it's listed as hornblower: loyalty. Roku has this as horatio hornblower: loyalty. The usual cast of the hornblower chapters of film... director andrew grieves, starring ioan gruffudd. In this adventure, horatio is tasked with delivering frenchman cotard to a meeting spot. Major cotard is played by brit greg wise, who is married to emma thompson. Keep an eye out for the landlord's daughter, julia sawalha, probably best known as saffie, on the awesome show ab-fab. On this voyage, the threat may come from someone on hornblower's own ship! What's with these accidents that are happening aboard ship? A good mix of land and sea action. Very family friendly, with little swearing and bloody violence. This was one of gruffudd's later hornblower adventures, which he had started filming in the 1990s. Jolly good show. Fun adventure.
Review of Hornblower: Loyalty
