Clinometer for boats. Measures heel and allows heel targets be set and timed for sailing racing and training.

Target heel can be set at any angle - for example, flat for dinghy sailing, or at a optimum upwind heel angle for yachts.

Any heel outside target range will be flagged and time within target range can tracked along with high score times for training.

Can be used as a standard simple clinometer for all boats, power and sail, and will display heel on a scale and via a digital display.