gerald wrote:Good question--and there's a good answer. Just for a matter of reference we'll go with the formula for potential top speed as 1.34 times the square root of the water line length. This is in knots but I always say mph...and it is really more of a reference figure than a hard figure set in stone. So--for a 16' boat (we'll ignore the waterline length because 16' is so easy to work with) the top potential speed is 5.36 mph. None of us go around paddling at top speed. I like to say that the cruising speed is ONE times the square root of the waterline length. That would mean 4 mph for your boat (it is 16'--isn't it?). Now--you CAN go faster than the calculated potential speed IF you have enough horsepower. Most people don't. And the effort required increases exponentially as you attempt to go faster. Your boat is wide so it's going to start feeling a lot of drag at the higher speeds. That's where you're hitting the wall at 5.1.
The length of the boat generally determines the potential speed of a boat. Other factors determine how hard it is to get to that speed. But remember that the effort increases exponentially and that's why the top speed is really very little more than a brisk cruise. I can paddle at top speed for a minute or two--maybe. I can cruise briskly for hour after hour.
What are to other factors that influence how efficient a boat hull is?
Night Wing wrote:If I had a GPS, I'd like to know how fast my OI travels.
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