Here goes! If you read the
explanation of turning error in the book you will appreciate that in this
question the compass will end up overreading due to
this particular problem (ie the indicated heading
will be greater than the correct heading). With regard to the amount of over read
we believe most schools use a rather simplified approach as follows:
Required Final Heading Turning Error
360 - 030 30 degrees
030 - 060 20 degrees
060 - 090 10 degrees
090 - 120 10 degrees
120 - 150 20 degrees
150 - 180 30 degrees
180 - 210 30 degrees
210 - 240 20 degrees
240 - 270 10 degrees
270 - 300 10 degrees
300 - 330 20 degrees
330 - 360 30 degrees
Therefore;
(1) to roll
out on a correct heading of 180 you will need to see 180+30 on the compass
(2) to roll
out on a correct heading of 360 you will need to see 360+30 on the compass