Right Nyses, they're all the same speed. No idea what "drift" is. The only boat that has a different speed is the Britannia, which has only one speed, the same speed as "slow" in the other boats. I have several of each of them on different characters, and I've tested and they all are the same speed, and also the legacy boats are the same. Now I am speaking in a straight line, turning or something other than straight ahead speed may be what "drift" means and very well could be faster in some of them than others.