In restricted visibility with two LOPs, what is the resulting position called?

In restricted visibility with two LOPs, what is the resulting position called?

• A. Dead reckoning
• B. True position
• C. Estimated position
• D. Last known position

Answer: (C)

Two lines of position give you location information from different observations. In restricted visibility you can’t confirm your exact spot, so you use the intersection of those two lines to define your position as the best available estimate. This intersection point is called the estimated position because it reflects measurement errors and uncertainty in the observations, not a perfectly known location. It differs from a true position, which would be exact if observations had no error, and from dead reckoning (calculated from course and speed) or from the last known position (the last fixed location before new observations). That’s why the resulting position from two LOPs is labeled as the estimated position.

Two lines of position give you location information from different observations. In restricted visibility you can’t confirm your exact spot, so you use the intersection of those two lines to define your position as the best available estimate. This intersection point is called the estimated position because it reflects measurement errors and uncertainty in the observations, not a perfectly known location. It differs from a true position, which would be exact if observations had no error, and from dead reckoning (calculated from course and speed) or from the last known position (the last fixed location before new observations). That’s why the resulting position from two LOPs is labeled as the estimated position.