Once again, a very good story. I felt this story was a great continuation of the Master's arc, as well as being a sequel to the Silurians, but above all it felt like a really high budget (comparatively) story with all of the stuff at sea, with a lot of great comedic moments. Some stand outs for me were the Master watching the Clangers, the Doctor playing blindfolded golf to pass some time, and him repeatedly stealing other people's food, all of which combined made this probably the funniest classic story I've seen so far. It feels like Jo is being developed a lot more this series, which I like, and alongside the last serial, this is shaping up to be my favourite season so far.