Final answer:
A fix is the position obtained by intersecting two or more lines of position taken at nearly the same time, used to pinpoint the exact location of a vessel or aircraft for navigational purposes.
Step-by-step explanation:
The position that is obtained by using two or more intersecting lines of position taken at nearly the same time is known as a fix. This navigational term is typically used in maritime and aviation operations to determine the precise location of a vessel or aircraft.
To achieve a fix, one must take at least two lines of position (LOPs) at a known time. These LOPs are often obtained from different navigational aids, such as radio beacons, landmarks, stars, or GPS. The point at which these lines intersect on a chart or map is considered the accurate position of the vessel or aircraft at the time the bearings were taken. This process is crucial for safe navigation, as it ensures that navigators know exactly where they are at a given moment, which is vital for plotting the future course.