subject: RC Boat Hull Plans: Hydroplanes, Monohull and Flat-Bottom [print this page] RC Boat Hull Plans: Hydroplanes, Monohull and Flat-Bottom
More than just for appearance purposes, boat hull plans are designed for maneuverability, stability and speed of the boat on the water. There are three types of hulls that you will find in hull designs of RC boats and they are briefly discussed below.
Hydroplanes
Known for their speed, RC powerboats like the outrigger, tunnel hull, catamaran and 3-point hydro have hull designs with more than one surface coming in contact with the water. The boat is lifted out of the water by the trapped air under the boat's hull space causing a lesser dragging effect since a lesser portion of the hull is in contact with the water. The effect would be higher speeds for the boats. Of all hydroplanes, you will find the outriggers as the fastest but they can be really tricky to deal with. For beginner racers, the combination of speed and better stability are offered by tunnel hulls and catamarans.
Monohull
Monoplane hulls or simply called monohulls are available is several designs but the most sought after and the most familiar is the vee-shaped hull. Only one continuous surface comes in contact with the water for all monohull designs. You will see this deep vee design in most sport boats. There are also shallow vee designs used in a few racing models because lesser hull surface comes in contact with the water. This will result to increased speed but the drawback is lesser stability that you can only get with deep vee designs.
Flat-Bottom
This design is commonly used in hovercrafts or airboats. As suggested by the name, the boat's bottom is flat or almost flat. Just above the surface, these boats float on an air cushion and the motors are sitting at the rear of the boat just above the body. Meanwhile, forward thrust is made possible by an airplane propeller. Any skill level will surely enjoy using hovercrafts.
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