Wot-tac is a boat shaped device. It has a compass mounted on the bow, and a centrally mounted dial etched with 360° markings. Please note that the dial has anti-clockwise markings – this is deliberate. The wot-tac can be used by dinghies and keelboats.
Wot-tac will predict
- start line bias,
- wind angles over the side of a boat (where bearings between the marks are known)
- Olympic and Trapezoidal courses and
- whether a gybe or bear away set is preferred on a windward/leeward course after a wind shift.
Wot-tac will take away the guesswork from knowing where the wind will be – saving you precious minutes.