I've got a standard labradoodle (75 lbs) that I'm interested/concerned with how he's gonna take to being on a boat. It could be a big factor in how my plans turn out, cause I don't know what I'd do if I can't have him around.
I currently have three dogs all from different backgrounds and all different breeds and they are all very good with boating.
It was mentioned in this post before but most of the time dogs get their cue from how to adress a situation from thier human. If you just act like going on the boat is a normal thing and not worry about what the dog is going to do and things will probably turn out fine.
I'd also recommend giving the dog a place once on the boat so it knows what it is supposed to do. Should it lay on the cockpit floor, in the saloon, steer the boat, make coffee? You get me drift, dogs are most compfortable when they have a job, even if it is laying by your feet.
Lastly, Doggie lifevest, yes almost all dogs can swim (some better than others) but try finding a dog head sticking out of the waves... not easy.
Anyway, good luck with your dog I hope he turns out to be a good boating buddy.