In a cross current, Navlines on the ARPA screen will remain stationary when you operate in which mode?

Prepare for the ARPA and Radar Operation Test. Enhance your skills with multiple choice questions, detailed explanations, and real-time simulations. Ensure maritime safety with confidence!

Multiple Choice

In a cross current, Navlines on the ARPA screen will remain stationary when you operate in which mode?

Navlines on an ARPA display follow the reference frame of the chosen stabilization mode. In ground-stabilized mode, the display is tied to the Earth's reference (geographic ground). That means the predicted paths (navlines) are drawn in earth coordinates and stay fixed on the screen, even if your own ship is being pushed sideways by a cross current. The ship symbol may move or drift, but the navlines remain in the same screen position because they’re anchored to the ground reference. In other modes, the display rotates or moves with the ship or radar, so the navlines would shift on the screen instead of staying stationary.

Navlines on an ARPA display follow the reference frame of the chosen stabilization mode. In ground-stabilized mode, the display is tied to the Earth's reference (geographic ground). That means the predicted paths (navlines) are drawn in earth coordinates and stay fixed on the screen, even if your own ship is being pushed sideways by a cross current. The ship symbol may move or drift, but the navlines remain in the same screen position because they’re anchored to the ground reference.

In other modes, the display rotates or moves with the ship or radar, so the navlines would shift on the screen instead of staying stationary.

More practice questions