SEA AREA A4 comprises which regions?

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Multiple Choice

SEA AREA A4 comprises which regions?

Explanation:
Sea areas define where different GMDSS safety communications are provided. The polar regions beyond 70° latitude in both hemispheres are designated as the polar area, A4. That’s why the correct description is the regions north of 70° N and south of 70° S. The Arctic Circle area, mid-latitude open seas, and the equatorial belt all fall within the zones covered by satellite and coastal networks up to those latitudes, not the polar cap beyond 70°, so they do not belong to A4.

Sea areas define where different GMDSS safety communications are provided. The polar regions beyond 70° latitude in both hemispheres are designated as the polar area, A4. That’s why the correct description is the regions north of 70° N and south of 70° S. The Arctic Circle area, mid-latitude open seas, and the equatorial belt all fall within the zones covered by satellite and coastal networks up to those latitudes, not the polar cap beyond 70°, so they do not belong to A4.

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