Question 1809Navigation General

The correct answer is D) The position of the object observed should be advanced to the new time and a new arc swung using the radius of the old arc. This is the correct answer because when running a fix forward using a radar range arc, the arc should be advanced by first determining the position of the object at the new time and then swinging a new arc using the same radius as the original arc. This maintains the accuracy of the original arc while updating the position to the new time. The other options are incorrect because A) adding the distance between LOPs to the radar range would not correctly advance the arc, B) an arc can be run forward using the proper technique, and C) converting the arc to a straight line would not preserve the accuracy of the original arc.