## Unswept Wings: lift and induced drag coefficients (calculation)

Calculation template How does it work? This calculation template uses Prandtl’s classical Lifting-line Theory. All the results are available for angles of attack from 0…

## Wave spectral density (calculation)

The performance of a sailing boat is affected by the presence of surface waves. To understand the boat’s behavior under waves, it is necessary first…

A headsail is a sail set forward of the mast, or of the foremast mast if there is more than one mast, where the measurement between the half luff poin…

## Mainsail aerodynamic coefficients (calculation)

A mainsail is a sail with the luff attached to the mainmast. The mainmast is the only mast in a una rig, sloop rig, or cutter rig, the fore mast in a …

## Hull parameters check (calculation)

Hull parameters check (calculation)

## Residuary resistance of the keel upright (calculation)

Residuary resistance of the keel upright (calculation)

## Residuary resistance of the hull upright (calculation)

Residuary resistance of the hull upright (calculation)

## Frictional resistance of the rudder (calculation)

Frictional resistance of the rudder (calculation)

## Frictional resistance of the keel (calculation)

Frictional resistance of the keel (calculation)

## Frictional resistance of the hull (calculation)

The frictional resistance is a force that is generated when the underwater parts of the boat and the water around are in relative movement (the boat m…