After ST2009, I started thinking about the Kelvin and her top speed since she is a single-nacelle vessel. I believe she is a Warp-5 vessel. In TOS, Enterprise and others have two nacelles and are capable of speeds up to Warp-8 (and 9 in a pinch). Later we see ships with three nacelles, most notably the Enterprise-D from "All Good Things". Does having more nacelles equate to a speed boost? Have we ever seen a ship with four or more nacelles?