While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001° per gyro compass and the charted value of the range of lights is 359°T, what is the gyro compass error?

Question

While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001&deg; per gyro compass and the charted value of the range of lights is 359&deg;T, what is the gyro compass error?

Accepted Answer

Option A: 2&deg;W. Gyro error is the difference between the true bearing and the gyro bearing. With a true range of 359° and a gyro bearing of 001°, the gyro is reading 2° higher than the true value, indicating a 2°W error (Gyro Least, Error West).

While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001&deg; per gyro compass and the charted value of the range of lights is 359&deg;T, what is the gyro compass error?

While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001° per gyro compass and the charted value of the range of lights is 359°T, what is the gyro compass error?