Bouwe talks about seaweed in the sargasso sea. Slomo shot of sargasso. Drone shot from high overhead of sargasso. Sam: Why so unhappy Kyle? Kyle, on the helm: A lot of weed. Peter: It's a bit of a pain, really. It gets stuck all over the deck, all over the lifelines. Shots of weed in the lifelines. Bouwe brushes his teeth below; Abby picks off weed at the base of the mast. More weed washes onto the boat in slo motion. Abby: It's not making us go fast. Might be good for the environment, but it's definitely not making us go fast. Bouwe, below, talks about how to clear it off. Peter, below, explains that they've got enough wind to "broach it off." Kyle demonstrates. Drone shot of them doing big S-curves to clear weed. Bouwe: We seem to be doing it all right. We see the polar percentages go down, we do our little trick, and the polar percentages go up again. Drone shots. Slomo washing machine. Abby grinding. Peter trimming. "Hold there." Peter, at the shrouds. "I think the 2 might be a little bit loose... Yeah."