You desire to make good a true course of 157°. The variation is 15°E, magnetic compass deviation is 9°W, and gyrocompass error is 3°E. A southwesterly wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?

Question

You desire to make good a true course of 157&deg;. The variation is 15&deg;E, magnetic compass deviation is 9&deg;W, and gyrocompass error is 3&deg;E. A southwesterly wind produces a 2&deg; leeway. What is the course to steer per standard magnetic compass to make the true course good?

Accepted Answer

Option D: 153&deg;psc. Working backward from true course 157°: subtract 15° East variation for magnetic 142°, add 9° West deviation for compass 151°. A southwesterly wind causes starboard leeway, requiring a 2° port correction, yielding 153°psc.

You desire to make good a true course of 157&deg;. The variation is 15&deg;E, magnetic compass deviation is 9&deg;W, and gyrocompass error is 3&deg;E. A southwesterly wind produces a 2&deg; leeway. What is the course to steer per standard magnetic compass to make the true course good?

You desire to make good a true course of 157°. The variation is 15°E, magnetic compass deviation is 9°W, and gyrocompass error is 3°E. A southwesterly wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?