Boating Accident/Death off Diamond Island

[UncleRay]

Originally Posted by NHDOLFAN

Wow. This article shows that someone was drinking. Now, whether the person(s) were impaired is a different story. At what speed would a boat need to be traveling to be on plane? I'm sure that Formula could answer this question. Only time will tell but it does not look good.

According to the tests on this hull, it looks to plane off at about 19/20 mph.

http://www.boattest.com/oem/general-...381#TestResult



If you care to run the math, this will get you close:

Minimum Planing Speed in Knots:

2.3 x ((32.2 x (all up displacement in pounds)^0.333)^0.5)/1.6889

For example, an 18' boat at 2,323.2 pounds (including crew) may plane at 13.902 knots.

The formula has no input for the shape of the hull. It just calculates the speed required to lift 2300 pounds. It also does not indicate how difficult it will be to get the hull to 13.9 knots. However, in my ignorance, I believe it may be somewhat representative. If the boat was surfing down a wave at 13.9 knots, it may very well be planing.