Drake
Guru
- Joined
- Sep 16, 2014
- Messages
- 611
- Location
- Independent Republic of Texas
- Vessel Name
- Small World
- Vessel Make
- Defever 50
We lose between 1 and 1 1/2 knots in water depth less than about 20 feet. I don't know the first thing about physics, but I know that water depth has a substantial effect with our hull.
As an aside, when we did our sea trial, I almost passed on the boat because the speed was so much less than the specs stated at given power settings. My surveyor assured me it was because of the shallow water (less than 10 feet). I thiught he was nuts until we got into deep water (over 40 feet). Sure enough, the speed picked up to spec.
So, we bought the boat.
As an aside, when we did our sea trial, I almost passed on the boat because the speed was so much less than the specs stated at given power settings. My surveyor assured me it was because of the shallow water (less than 10 feet). I thiught he was nuts until we got into deep water (over 40 feet). Sure enough, the speed picked up to spec.
So, we bought the boat.