Which inputs are required to maintain a North-Up, True Motion display?

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Multiple Choice

Which inputs are required to maintain a North-Up, True Motion display?

In a North-Up, True Motion radar display, two pieces of information are needed to keep the scene correctly oriented and moving in a way that reflects the ship’s actual movement. The gyro course provides the vessel’s heading relative to true north, so the display can stay fixed with true north at the top. The log speed gives how fast the ship is moving, which the radar uses to animate the scene so targets and landmasses move consistently with the ship’s travel. Together, these inputs let the screen remain oriented to true north while showing motion that corresponds to the ship’s real course and speed. Other inputs like GPS position, wind speed, rudder angle, or engine RPM don’t directly drive this transformation, so they aren’t required to maintain North-Up, True Motion.

In a North-Up, True Motion radar display, two pieces of information are needed to keep the scene correctly oriented and moving in a way that reflects the ship’s actual movement. The gyro course provides the vessel’s heading relative to true north, so the display can stay fixed with true north at the top. The log speed gives how fast the ship is moving, which the radar uses to animate the scene so targets and landmasses move consistently with the ship’s travel. Together, these inputs let the screen remain oriented to true north while showing motion that corresponds to the ship’s real course and speed.

Other inputs like GPS position, wind speed, rudder angle, or engine RPM don’t directly drive this transformation, so they aren’t required to maintain North-Up, True Motion.

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