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- Master & Chief Mate (Oceans or Near Coastal (Offshore Supply Vessel)) »
- Q204 - Navigation General: Oceans
43. Coral atolls, or a chain of islands at right angles to the radar beam, may show as a long line rather than as individual targets. What causes this distortion?
The distortion of coral atolls appearing as a line instead of individual targets is caused by the radar's beam width; multiple islands aligned at right angles to the beam fall within the same azimuth beam, merging their echoes into a single, continuous return.
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