Deck General · Shiphandling — Turning Circle
In a turning circle, the 'advance' is the distance the vessel travels:
- APerpendicular to the original course
- BAstern
- CIn the direction of the original course, measured from where the rudder was put over✓ Correct
- DTo complete a full 360°
Explanation
Advance is measured along the original course line from the point the rudder is put over to where the head has turned 90°. Transfer is the perpendicular distance from the original course, and tactical diameter is the maximum width at a 180° turn.
Authority: Bowditch; Knight's Modern Seamanship
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