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| Broadcast Warnings |
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In support of the Global Maritime Distress and Safety System (GMDSS), Broadcast Warnings are promulgated by the Worldwide Navigational Warnings Service (WWNWS) to provide rapid dissemination of information critical to navigation and the safety of life at sea.
WWNWS contact information:
E-mail: NavSafety@nga.mil
Phone: 301-227-3147
Toll-free: 800-362-6289
DSN: 287-3147
Navigational Warnings are issued regularly and contain information about persons in distress, or objects and events that pose an immediate hazard to navigation. The four types of Navigational Warnings - NAVAREA IV, HYDROLANT, NAVAREA XII, and HYDROPAC - are categorized by their location. View graphic of Navigational Warnings limits.
Arctic Maritime Safety Information (AMSI) Warnings are issued for the Arctic region not covered by HYDROLANT and HYDROPAC messages.
Special Warnings and MARAD Advisories are issued infrequently and contain information about potential hazards caused by the global political climate.
The Daily Memorandum is issued each weekday and contains a summary of all Broadcast Warnings and Special Warnings promulgated during the past 24-72 hours. The Atlantic Edition contains HYDROLANT and NAVAREA IV Warnings while the Pacific Edition is comprised of HYDROPAC and NAVAREA XII Warnings. Both editions include Special Warnings issued during the same period.
Use the database query form below to retrieve in-force Broadcast Warnings. |
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Warning Type
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Current Warning
Number
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NAVAREA IV
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104 / 2010
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NAVAREA XII
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107 / 2010
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AMSI
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18 / 2008
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HYDROLANT
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426 / 2010
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HYDROPAC
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480 / 2010
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Special Warnings
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124 / 2008
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MARAD Advisories
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3 / 2010
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