- Stock #406510 - Formula Power Craft with two (2) outboard Mercury Verados (400 hours) This 1989 Formula 311 SR-1 is a true work of art and a real gentleman's boat. It's not often you see a Formula like this for a boat this age. This a very rare Formula it is powered by two 2016 300 Mercury Verardo with (400 hours) The cockpit features a large rear couch and twin bolster seats. The couch should hold 4 adults comfortably. The bolster seats have seat cushions that raise and lower to allow standing or sitting while underway. Both bolsters are secured to the sides of the boats with tubula... read more