- Board's lateral forces (also LIFT) occur and are measured for optimization at LOW angles of attack.
- Hull's DRAG forces occur at LOW angles of attack and are usually measured for optimization at NO angle of attack.
I think that the angles are around 6° or so? Do you have any numbers?
When a boat points six degrees higher then its actual path there is probably something wrong with its foils. At this angle the hull itself is generating lots of lift.
I believe the drift angle is typically around two or three degrees.
Actual figures vary in the same boat depending on point of sail, speed, wind pressure, heel angle, etc.
When comparing different boats under the same conditions, each one's drift angle will depend on foil's aspect ratio, section, surface quality, magnitude of the lateral forces compared to foil area, etc.
