Ritchie Supersport Black Compass w Blue Dial RIT-SS-1002 Ritchie Supersport Marine Compasses are designed and tested for use on offshore race boats. Each Supersport Compass features a PowerDamp Plus dial which features a PowerDamp dial skirt to prevent oscillation. PowerDamp Plus dials also have larger DirectiveForce magnets for quick lock on and extra-large steel pivots and jewels for smooth, fast action. Features PowerDamp Plus, High-Visibility Blue Dial with Extra Large White Numerals Easily