It is accurate to within 0.03mm. The same sensor is used on a boat to shine a beam off the tiller bar, using the reflection to measure the Angle of the rudder.
Tillers are more commonly used on smaller sailboats because it can take much force to move the larger rudder of a big boat with a tiller.
舵柄在小型船只上使用得更广泛，因为对于大船来说转动舵柄来掌舵需要太大力气了。
3
Her right shoe is connected to a cable that runs through the rear cabin and hooks into the tiller, which is screwed to the rudder, so she can steer as she rows.