Deep v bottom
Flat-Bottom Hulls
Deep V or Flat bottom? | Bushcraft USA Forums
Deep-Vee Bottom
The opposite of a flat-bottom is a deep-V, which is wedge-shaped from bow to stern. This provides the smoothest ride in rough water, since the hull knifes cleanly.
THE DEEP-V (Last of a three-part survey on powerboat hull design. Reprinted from the May Motor Boating and Sailing) These days, when a designer lays .
Description:To deal with the upward deflection of water from the bottom — a problem leading to extremely wet running on early boats, with spray flying up and over the house in some extreme conditions — builders have added spray knockers or chine steps to flatten the angle of deflection. Yet their wide amidship bottom surfaces still pound against oncoming waves. In the simplest design, the chine is simply a corner on each side of the hull that has no effect on performance or handling. It is well known that the high efficiency of flat bottom craft cannot be advantageously used at high speed in anything but a flat calm; thus, high speed hydroplanes are limited to running in calm water. There are known racing boats with water jet propulsion systems, but such systems are relatively new and more expensive than traditional propeller propulsion systems, as well as being less efficient in fuel consumption at certain speeds.
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