probetacking
Probetacking is a navigation technique used on boats to estimate an accurate position at sea. It involves using a magnetic compass, a length of cord or twine, and a series of vertical marks known as stakes or tacks to chart a boat's course.
The technique relies on the principle that the angle between the boat's course, the magnetic compass, and
To use the pro betacking technique, a sailor typically sets up a series of stakes on the
With the probetacking angle known, the sailor can calculate the direction of the boat's course and, using