In reply to the sheep:
In my experience* of Scouting, it can be great for kids - but only if the leaders are knowledgeable, enthusiastic, and committed. Otherwise the experience can be somewhere between boring and dangerous. Water based activities obviously entail specific risks, so check out the leaders: do they seem competent as well as the kind of people who actually like working with children?
Also the gender split in most scout groups is still tends towards male, so if applicable you might want to make sure your daughter is comfortable with that.
(*I used to help out with running a (landlubber not sea) Scout group for a few years back in the nineties, and now have a child who goes to scouts.)
Post edited at 14:33