For a leeboard that is clear enough, the higher it gets, the less the upward force of the water is co-operating. |
With this arrangement the leeboard could be raised and lowered and also shifted to the lee side on each tack. |
These two pieces have to align with the centerline of the hull and be in the same plane or the leeboard will jam. |
More modern rigs generally use a leeboard on only one side of the boat, while older rigs have one on each side. |
With your legs facing forward, the leeboard thwart goes approximately over your knees. |
Normally we would start with the sail, then on to the leeboard and finally on to the structure. |