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NAVAREA, Sub-Area, and Coastal warnings are regulated by the WWNWS, and the level of warning determines the area it will be broadcast in. Local warnings, not regulated by the WWNWS, are generally restricted to in-shore areas. [7] A broadcast applicable to an entire NAVAREA is also extended 700 miles (1,100 km) beyond it, to alert incoming shipping.
NAVAREAs, also described as Navigational areas, [1] are the maritime geographic areas in which specific governments are responsible for broadcasting navigation warnings. . Weather warnings have a similar system using MET
Sécurité: A radio call that usually issues navigational warnings, meteorological warnings, and any other warning needing to be issued that may concern the safety of life at sea, yet may not be particularly life-threatening. Pan-pan: This is the second most important call. This call is made when there is an emergency aboard a vessel, yet there ...
Map of the 21 NAVAREAS into which all the world's oceans are divided. Each serves to allocate responsibility for sending Marine and Safety Information (navigational warnings) to ships at sea, as part of the Global Maritime Distress and Safety System (GMDSS).
A notice to mariners (NtM [1] or NOTMAR, [2]) advises mariners of important matters affecting navigational safety, including new hydrographic information, changes in channels and aids to navigation, and other important data. [3] Over 60 countries which produce nautical charts also produce a notice to mariners.
A warning signals that a tornado has been indicated or spotted on a weather radar and covers a smaller area, like a city or a county. Under a warning, people should seek shelter and take action ...
“A Red Flag Warning is in effect for today, meaning conditions will be favorable for extreme fire behavior. Avoid all outside burning and welding.” The warning is in effect from 1 p.m. Tuesday ...
a heavy freezing spray warning means heavy freezing spray is expected to rapidly accumulate on vessels. these conditions can be extremely hazardous to navigation. it is recommended that mariners not trained to operate in these conditions or vessels not properly equipped to do so...remain in port or avoid the warning area.