A ship sails north, then turns 45° in a clockwise direction. After another hour, it turns clockwise 90°. In which direction is the ship now sailing?

90 + 45 = 135° west?

1 answer

the heading is now 135°
period. All headings are measured clockwise from due North.

This can also be expressed as relative headings, such that the angle is at most 90°, as in

E 45° S
S 45° E

These are both abbreviated as just SE.