You observe the lower limb of the Sun at a sextant altitude (hs) of 54° 28.2' on 22 July. The index error is 1.5' off the arc. The height of eye is 56 feet (17.1 meters). What is the observed altitude (Ho)?

You desire to make good a true course of 129°. The variation is 7°E, magnetic co...

You desire to make good a true course of 132°. The variation is 10°W, magnetic c...

A great circle crosses the equator at 141°E. It will also cross the equator at w...

The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. Th...

The true course between two points is 312°. Your gyrocompass has an error of 3°W...

The upper vertex of a great circle track is in LONG 156°00'E. Sailing eastward,...

In which voyage, between two points, is the rhumb line distance NOT approximatel...

At 0100 zone time on 23 September your DR position is LAT 24°25.0'N, LONG 83°00....

At 0400 zone time on 24 June, your DR position is LAT 23° 10.0' N, LONG 085° 33'...

Your 0000 zone time position on 13 June is LAT 24° 35' N, LONG 142° 26' E. Your...