Question 1547Navigation General

The correct answer is B) ranges. When using an unstabilized radar, fixes are determined most easily from ranges rather than bearings. This is because an unstabilized radar does not automatically compensate for the vessel's own motion, so the bearing information can be unreliable. However, the range information remains accurate, allowing the navigator to determine the distance to various targets and use that data to plot a fix. The other options are incorrect because: A) objects close aboard may not provide sufficient information for an accurate fix, C) tangent bearings require additional calculations that are more difficult without stabilization, and D) center bearings also suffer from the lack of stabilization, making them less reliable than range information.