A V-hull, is the shape of a boat or ship in which the contours of the
hull come in a straight line to the
keel
The keel is the bottom-most longitudinal structural element of a watercraft, important for stability. On some sailboats, it may have a fluid dynamics, hydrodynamic and counterbalancing purpose as well. The keel laying, laying of the keel is often ...
. V-hull designs are usually used in smaller boats and are useful in providing space for
ballast
Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within ...
inside the boat.
References
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Shipbuilding