Big boats wanting relatively high speeds have been going to jets for quite a while. None are doing 100+ but when the're matched to turbines do quite nicely. Saw one on Mega Machines 130' and doing 80. NAvy is going with jets on boats designed to stay out of blue water. The NAvy thought 40 knots was fast so anything over that and they are thrilled. Look for the show on the X-craft on the military channel.