Port tack faster than starboard tack, same point of sail?
On my boat I've noticed that sometimes when I'm close hauled, wind and waves from the same direction, that starboard tack is faster than port tack, sometimes by a whole knot. I can't figure out why.
My rig is balanced, straight mast, I've tuned the shrouds at very nearly the same tension. I do have a bit of a rake, about 2-3 inches. Rudder isn't bent, keel isn't either.
At dock there is a slight list to the port side as there's more weight there, but I can't imagine that's the reason. If anything, shouldn't that make me faster on a port tack?
Am I missing something?