Faolyn
(she/her)
Depending on the circumstances: Because the PCs are equipped to handle the issues and the sailors aren't (or the PCs are just better at handling the issues, because of higher stats, magic, whatever). Because the players want something to do and messing around on a boat is cool. Because one of the stipulations for getting passage on the boat is that the PCs help out. Because the PCs are spending downtime working towards getting proficiency in water vehicles, navigator's tools, or something else like that.I agree with what Chaosmancer said earlier. Why would the PCs being do those things rather than the professional sailors?