Marine Glossary

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NAVAREA Warnings

Broadcast messages containing information which may affect the safety of navigation on the high seas. In accordance with international obligations, the DMA is responsible for disseminating navigation information for ocean areas designated as NAVAREAS IV and XII of the World Wide Navigational Warning service. NAVAREA IV broadcasts over the waters contiguous to North America from the Atlantic coast eastward to 35° W and between latitudes 7° N and 67° N.

NAVAREA XII broadcasts cover the waters contiguous to North America and extends westward to the International Date Line and from 67° N to the equator east of 120° W, south to 3° 25' S, thence east to the coast. Other countries are responsible for disseminating navigational information for the remaining NAVAREAS.

NAVAREA Warnings may be superseded by a numbered paragraph in Notice to Mariners. Printed copies are published each working day in the appropriate edition of the Daily Memorandum. The text of effective warnings for NAVAREAS IV and XII is printed in the weekly Notice to Mariners. Note NAVREA is a term used by the hydrographic community. These same areas are called METAREAS by the meteorological community. See related coverage areas under Global Maritime Distress and Safety System.