How Fast Can a Chesapeake Light Craft Northeaster Dory Sail?

I can't explain what pushes me to wonder how fast my Northeaster Dory can sail. At 100 pounds hull weight and 15 feet waterline with 62 square feet of sail area, it's bit like a Windsurfer longboard, but I doubt it has the same top speed. The mast is located toward the front of the boat so in high wind conditions it's hard to get the bow far enough out of the water to initiate true planing on the aft part of the hull.

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

Note: In November of 2017 I had the boat out on another rather windy day and filmed a bit of footage. Take a look and see what you think. Does the CLC Northeaster Dory Plane? You Be the Judge.