That said, the supposed "hull speed" for a 15-foot displacement hull is 6 mph, and I routinely sail the dory faster than that. I have had long(ish) reaches at 7 - 8 - 9 mph. And I always thought I could conceivably get the boat up on a plane.
I'm no longer sure I'd be able to tell whether or not the boat is on a plane, but today I sailed in conditions where the average wind speed was in the 10 - 15 mph range with brief gusts in the 20 - 25 mph range. I touched 13 mph in three gusts and had good runs at 9 mph. I thought the boat was manageable in the strongest gusts so it may be capable of extended runs at 13 mph or more. . . . But I'm not willing to be out on the water when the average wind speed is 20 and gust are 35. Even if I could manage the boat in those conditions, I'm not sure I could get the sail up safely or douse it without taking a drink.
13 mph is a nice number. I'll take it. . . . The following graphs provide raw data on boat speed and wind speed. Make of it what you will.
GPS-measured Speed - 2PM to 3 PM |
Note Wind Speed from 2PM to 3PM |