Originally Posted by svsirius
So to give that perspective my ex Frers 36 a racer cruiser rated 90. That means for every mile sailed I owed the Tayana 37 80 seconds or so... or it was about half as fast.
If you assume a boatspeed of 6 knots, you are traveling 1 nautical mile every 10 minutes. If it takes another boat 10 minutes + 80 seconds, they are traveling at around 5.3 knots.