Rudder frictional resistance calculation
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Keel frictional resistance calculation
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Hull frictional resistance calculation
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Sailing yacht frictional resistance calculation
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The air-water interface
Water and air are two different fluids that enter into contact at the ocean’s surface at what is called the air-water interface. This interface, also…
Surface waves
In the ocean, we find waves moving along the surface (at the air-water interface), but also at deeper layers along what is called pycnoclines ( which…
What is the Froude number?
The Froude number is used in naval architecture to: predict the boat-created wave system that moves along with the boat as it makes its way…
The evolution of hull and keel forms – Part 2
The “Great Exhibition of the Works of Industry of All Nations” took place in London in 1851. This first “world expo” was inspired by the…
The evolution of hull and keel forms – Part 1
As soon as early humans began to explore new territories for hunting and trading, they found more and more natural water barriers standing in their…
The lines drawing
Years ago, the first step to design a boat was to carve a small-scale model of the hull in wood. This model was then sawn…
Introducing the hull
The hull provides a volume to house accommodation, machinery, the supplies, and the cargo. It has to be seaworthy enough for the routes the yacht will…