Navigation PPLadvanced
Given TC 032°, WCA +11°, deviation 1°W, and compass heading 049°, what are TH, variation, and MH?
Answer
TH 043°, VAR 5°W, MH 048°
Explanation
The given WCA means $TH=TC+WCA=032^\circ+11^\circ=043^\circ$. A compass heading of 049° with 1° west deviation corresponds to $MH=048^\circ$ under the stated sign convention. From true 043° to magnetic 048° requires 5° west variation (west is added when converting true to magnetic).\n\n**Key takeaway:** Apply wind, deviation, and variation in their proper reference transitions.\n\n**Glossary:** **TH**: true heading; **MH**: magnetic heading; **DEV**: deviation.
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