Compass to true using the deviation curve

Exercise book 2.5 · on paper you need the deviation card

If the deviation is taken as 0 (curve ignored) the results are 330, 073, 284, 024 and 178; these hold only when the deviation is zero.

Using the boat's deviation curve, convert five compass headings to true: a) 340°C with variation 10°W; b) 070°C with 3°E; c) 290°C with 6°W; d) 010°C with 14°E; e) 190°C with 12°W.

a) compass heading and variation: 340°C, 10°W
b) compass heading and variation: 070°C, 3°E
c) compass heading and variation: 290°C, 6°W
d) compass heading and variation: 010°C, 14°E
e) compass heading and variation: 190°C, 12°W

Solution worked out by us from the course material: to be checked by the instructor.