A steamer would like to move in the direction making an angle of deg10 South of West. The magnetic declination at that plaçe is 17 West of North. The steamer should move in a direction of

Explanation

As the declination is `10^(@)` E, the north as pointed by mariner.s compass will be `10^(@)` east of true (i.e., geographical) north. Hence the east as shown by the compass will be actually `10^(@)` ahead, i.e., `10^(@)` south of east. Thus the true direction of motion of the ship is `10^(@)` south of east.