What tool is essential for long-range detection of surface threats?

Radar is an essential tool for the long-range detection of surface threats due to its ability to detect and track objects in a variety of weather conditions and at significant distances. It operates by emitting radio waves that bounce off objects, such as ships or aircraft, and return to the radar station. This capability allows operators to accurately identify the position, speed, and direction of various surface threats.

While thermal imaging, night vision, and acoustic sensors have their own specific applications and advantages in different contexts—like detecting heat signatures in low light or underwater environments—they do not match the range and effectiveness of radar for surface threat detection. Radar remains the most reliable choice for broad and long-range surveillance in naval operations, making it the preferred tool for monitoring and responding to surface threats.