***Meaning*** :: <u>U</u>ndershoot <u>N</u>orth, <u>O</u>vershoot <u>S</u>outh ***Explanation*** This is an example of [[Compass Errors]]. This acroynm helps to remember how to compensate for the [[NOSE]] compass error: - **Undershoot North (U-N):** When turning to a northerly heading, roll out of the turn _before_ the compass reaches North (e.g., at 350° for a 360° heading). - **Overshoot South (O-S):** When turning to a southerly heading, roll out of the turn _after_ the compass passes South (e.g., at 190° for a 180° heading). #acronym