NMT stands for

• A. Non Magnetic Torque
• B. North Magnetic Tilt
• C. No More Than
• D. Null Magnetic Threshold

Answer: (C)

NMT is a limit indicator used in navigation, meaning “No More Than.” It signals a maximum value you must not exceed, whether that’s distance, time, or another quantity relevant to your maneuver or plan. So, if an instruction or note uses NMT, you should stay at or below the stated limit. The other phrases listed aren’t standard navigational abbreviations for indicating a ceiling or cap, which is why they don’t fit. For example, “NMT 2 NM” tells you not to go beyond 2 nautical miles from the reference point.