Manoeuvring Data - Zig-Zag

As with the turning circle, the rudder angle must be entered (between 0 and 35 degrees). In addition, a heading check angle is input which is the heading value at which the rudder is changed from port to starboard (or vice versa).

The choice of whether the initial 'zig' will be to port or starboard is also required.

See Zig-Zag Manoeuvre for a description of the calculations and the resulting output.