Which statement about using three lines of position (LOPs) is false?

• A. Three LOPs provide more information than two
• B. Three LOPs are the best method
• C. It takes longer to compute than two
• D. Not recommended

Answer: (D)

Using three lines of position gives more information than using just two because each observation adds a separate constraint on where you could be. With three independent LOPs, you get an intersection that not only narrows down your position more tightly but also lets you check that the lines agree with one another. This redundancy helps reveal and reduce errors, making the fix more reliable. So saying that three LOPs are not recommended isn’t accurate—the method is generally preferred when possible, even though it may require a bit more time to plot and compute. The extra effort pays off in better accuracy and cross-checking for consistency.