Helmsman Steel Boat Compass. Helmsman Steel Boat Compass Features, 3-3/4″ PowerDamp Dial, Special Reinforced Bracket with Quadrantal Correctors, Hardened Steel Pivot and Sapphire Jewel Movement, 45 Degree Lubber Lines, Full Internal Gimbals, Exclusive Built-in Green NiteVu Lighting, Built-in Standard Compensators and Booster Magnets on Base, Movable Sun Shield, 100% Repairable, , Approx. Shipping Weight: 6lbs (2.72 kg), Notes: , Comes standard with 12 volt lighting. 24 & 32 volt lighting options are available. For all Helmsman built before 1992 please see the service manual page 5-14 or contact Ritchie for replacement lighting., Some custom built OEM models may have different lighting..