The Hull is undoubtedly the most critical part of a vessel that needs to be designed with utmost care and precision. The design of the hull is done keeping in mind the material used in designing the boat. The structure of the hull in a wooden boat would be different from that of a steel vessel. While designing that perfect hull there are a few basic rules to remember and follow.
Let us start by looking at the design of a hull of a ballasted boat. The rule is that the weight of the ballast to be placed inside the does not exceed 50% of the upward weight that the boat provides by the water acting on all its sides. The idea being that weight of the weight is just about enough that the boat is dipped inside the water and ensures stability of the boat. When you design a racer boat which obviously has to be light the hull design would be very different. For a racer boat one obviously needs higher prismatic coefficient. The prismatic coefficient is a measure of rate at which the cross sectional area of the ship changes. While designing a clinker on frame hull, it is absolutely essential that one designs for at least 3 stakes of separation. In case this is not done the boat is likely to be unstable. For a small and medium boat, the freeboard should be approximately 10% of the load waterline length commonly known as LWL.
Remember it is the Watercraft (Hull) which determines the success of your vessel design since it forms the basic structure, design and shape of the vessel. A good hull design determines whether the boat is stable and floats. Remember to make use of good boat design software while designing that perfect hull for your dream boat.
Finally you must remember that decent boat design software helps you to build the boat of your dreams.
Probably the best idea is to get some sort of 3D boat design software that is affordable, easy and flexible to use and is suitable for anyone from the hobby model boat builder to professional mass ship producers.
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