What must a navigator be aware of when using GPS?

A navigator must be aware that while GPS technology is generally reliable, it can experience malfunctions or inaccuracies due to various factors. Therefore, it is crucial to verify GPS data with traditional navigation methods, such as nautical charts and other navigational aids, to ensure safety and accuracy. This redundancy in navigation helps to mitigate any potential risks associated with reliance solely on GPS, particularly in emergency situations or when navigating in challenging environments.

Other options present misconceptions about GPS capabilities. The assertion that GPS does not require regular updates overlooks the fact that while the satellites themselves may not need frequent updates, the software and maps used to interpret GPS data can. The claim that GPS only provides general positioning is misleading because GPS can offer highly precise location data. Finally, the idea that GPS signals are never affected by weather is incorrect; adverse weather conditions can indeed impact GPS signal integrity, which is why it's essential to use multiple navigational methods for assurance.