The NDRS coverage extends to at least how many nautical miles offshore?

The NDRS coverage extends to at least how many nautical miles offshore?

• A. 20
• B. 50
• C. 100
• D. 5

Answer: (A)

Understanding NDRS coverage is about how far offshore the system can reliably monitor and communicate with vessels. The minimum offshore reach is twenty nautical miles. This distance ensures near-shore traffic is included in the watch and that alerts and coordination with coastal operations can occur in a timely way. A smaller radius, like five nautical miles, would miss vessels just outside the harbor, reducing usefulness. A much larger radius, such as fifty or one hundred nautical miles, would require significantly more infrastructure and power without necessarily adding practical value for standard coastal watch duties. So, twenty nautical miles is the practical, reliable baseline for NDRS coverage.

Understanding NDRS coverage is about how far offshore the system can reliably monitor and communicate with vessels. The minimum offshore reach is twenty nautical miles. This distance ensures near-shore traffic is included in the watch and that alerts and coordination with coastal operations can occur in a timely way. A smaller radius, like five nautical miles, would miss vessels just outside the harbor, reducing usefulness. A much larger radius, such as fifty or one hundred nautical miles, would require significantly more infrastructure and power without necessarily adding practical value for standard coastal watch duties. So, twenty nautical miles is the practical, reliable baseline for NDRS coverage.