Each navigation officer must guarantee the safety of the vessel and its group. Accidents can happen to the most cautious and sensible navigator. From the beginning of the trip planning, the navigator needs up-to-date information that will affect the passage of the boat. Key information for vessels is safety-related information, including marine safety information. Marine safety information incorporates navigational and meteorological warnings, weather forecasts, warnings about navigational hazards, missing vessel warnings, and other serious messages related to the safety of the vessel and its group. So gmdss navtex receiver helps a lot.
Constant Watch
Constantly watching for desired information among a large volume of messages is not extremely practical with a constrained radio structure. The NAVTEX framework provides all navigation officers with automatically updated information. It tends to be used on boats of all types and sizes. The area covered by Navtex can be up to 400 nautical miles from the broadcast station. An onboard NAVTEX collector prints weather and navigation warnings, forecasts, and dire marine safety information for ships. It forms a vital component of the Global Maritime Misery Safety Framework (GMDSS). Navtex utilizes the radio wire or narrowband direct printing (NBDP) feature to transmit information automatically.
How Does Navtex Work?
Navtex handles a 518 kHz recurrence in the middle recurrence band. 490 kHz recurrence is also involved in certain nations for national language broadcasts, also known as national navies. Where average recurrence collection is problematic, transmissions are done at 4209.5 kHz. The default setting on a Navtex is 518 kHz. The entire world is separated into 21 areas known as NAVAREAS (counting 5 areas recently introduced for the Arctic location) to circulate this information. Each Navarea has several navtex stations that further assist in transmitting messages.
Determination Of Stations
All Navtex collectors are programmable to allow the navigation officer to ensure that key messages from chosen Navtex Stations are displayed or printed. The Choose STATION menu in the Menu option on a Navtex Collector allows the officer to choose the optimal stations he wants to obtain automatically or manually.
In automatic determination, navtex obtains marine safety information for the area the boat is in at all times and with virtually no input from the customer. On the off chance that any navigation equipment like GPS serves a boat’s position data, Navtex will automatically choose which NAVAREA the boat is currently sailing on and therefore select the appropriate Navtex Stations. In manual mode, the navigator officer can choose which stations he wants to pick up. For reference, a summary of Navtex Stations can be found in Admiralty Rundown of Radio Signals Volume 3 Part 1 and in Rundown of Coast Stations and Special Help Stations (Rundown IV).
