A straight line, or bearing, which extends from a mark to indicate the course a boat should sail with one tack to pass to the windward side of the mark.
Leeward is the direction downwind from a specified position. Seen the side of the boat on which the force of the wind is not felt.
The sideways slip to Leeward of a boat travelling through the water, most obviously experienced when sailing upwind. Typical values of leeway are 3-5 degrees, but can be more or less depending on the type of boat, the heel angle and the sea state.
- Line Bias
The end of a racing start line which is closest to the wind. Can be expressed as an angle ("Port end is biased by 3 degrees") or a distance, usually boat-lengths, ("Port end is biased by 2 lengths").
Line Bias is just one consideration of where to start on a line - others include tide, first leg strategy, other competitors etc.
Loadcells are sensors that detect force and convert it to an electrical signal that can then be viewed and recorded.
Loadcells are particularly useful for replicating settings tack-to-tack and day-to-day, e.g. Forestay tension. They are also widely used on larger yachts for monitoring safe working loads (SWL) of rigging and other components.