1987 CSY 18' SF max specs

[Fr. Frank]

I own a 1987 18', which according the state of Florida was first titled in September of 1986. That would make it one of the hulls actually built by CSY but then sold to Tracker Marine, and subsequently sold as a Tracker SeaCraft.

I know my hull, with the fuel tank removed and no motor on it weighs right at 1690 lbs, including trolling motor but w/o batteries. This is more than the 1400 lbs listed in the specs on this site. And yes, my foam is dry, as is my transom. (no extra water weight)

The overall length from the rub rail to the 27" tall transom cutout is 18' 3" as measured with a laser, not the published 18' 0". The beam is 7' 6 1/2" and not the published 7' 5". The beam measurement is important in the calculations below.

If we use the USCG specs for determining maximum horsepower, the max horsepower rating for my hull SHOULD be 200 hp. Here's why:
The LOA for the hull to the nearest foot is 18'. Beam to the nearest foot is 8'. This gives a factor of 144. (144x2)-90= max hp of 198, rounded up the nearest 5 hp, giving a 200 hp max rating.

And accordingly, the placard on my boat shows that it's an 18' SF, Max 5 persons, Max 1325 lbs persons, motor and gear, and Max hp is 200.

Of course, I put a 90 hp Etec on it. :>)

Has anyone else seen this max hp rating of 200 hp on any other 18'?