“True Virgins Make Dull Companions” is the well known maritime mnemonic for remembering the formula for converting a True heading to a Compass heading. True, Variation, Magnetic, Deviation, Compass.
TrueVirgins is a simple tool that makes maritime heading conversions easier. It automatically uses the established formula for converting headings from True to Compass and vice versa. Designed for sailing instructors, students of maritime navigation, and other enthusiasts to aid learning and understanding.