A bulkhead compass consists of a navigation instrument mounted directly into a vertical interior wall. This placement allows the sailor to view the heading from the outdoor steering station or cockpit. The device usually features a dual-sided display for visibility from both the inside and outside. High-strength glass protects the internal magnetic needle from the harsh effects of salt and water. This fixed mounting ensures the compass remains steady even when the boat leans in heavy winds. One example occurs when a sailor looks at the cabin wall to check the course. The glowing red light inside the housing allows for clear navigation during a dark night. Internal gimbals keep the compass card level while the boat moves over large ocean waves. This tool provides a reliable backup if the primary electronic GPS system fails during a trip. Proper installation requires the compass to sit perfectly parallel to the center line of the hull. Regular calibration prevents local metal objects from interfering with the accuracy of the magnetic reading.
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