Ritchie V-57 Explorer Dash Mount Marine Compass The Ritchie V-57 Explorer Marine Compass is an in-dash compass featuring an easy to read Direct-Read dial. Direct-Read dials allow you to see the compass heading and lubber line from directly in front. Ritchies Explorer compasses have built-in compensators. These compensators are non-interactive magnets that are balanced and optimally spaced for accurate correction. Explorer Compasses utilize Directiveforce Magnets, which provide superior accuracy