I have written a small tool that calculates both max VMG (for upwind & downwind) for a given TWS – , and also maximum VMC given input of TWS, TWD and a CC to the waypoint and hey, when I input 20.3kt@12 degrees and CC of 94, it outputs “Max VMC = 8.57kt @ 105.95 [8.76kt]”, where actual BS is in the square brackets, and VMC is 8.57kt…

No more sliding around bits of cardboard! 😉

PS: I was quite surprised by how much even the upwind max VMG angles can change for different TWSs… Some more than others of course, like mini 6.5 varies greatly- with a critical point around 11kt.

]]>Regards ]]>