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  2. Global Maritime Distress and Safety System - Wikipedia

    en.wikipedia.org/wiki/Global_Maritime_Distress...

    GMDSS sea areas serve two purposes: to describe areas where GMDSS services are available, and to define what radio equipment GMDSS ships must carry (carriage requirements). Prior to the GMDSS, the number and type of radio safety equipment ships had to carry depended upon its tonnage.

  3. Types of radio emissions - Wikipedia

    en.wikipedia.org/wiki/Types_of_radio_emissions

    An emission designation is of the form BBBB 123 45, where BBBB is the bandwidth of the signal, 1 is a letter indicating the type of modulation used of the main carrier (not including any subcarriers which is why FM stereo is F8E and not D8E), 2 is a digit representing the type of modulating signal again of the main carrier, 3 is a letter ...

  4. File:DELF A1 Diploma.pdf - Wikipedia

    en.wikipedia.org/wiki/File:DELF_A1_Diploma.pdf

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  5. Inmarsat-C - Wikipedia

    en.wikipedia.org/wiki/Inmarsat-C

    The disadvantage is that voice communication is not possible with Inmarsat-C. [1] The service is approved for use under the Global Maritime Distress and Safety System , meets the requirements for Ship Security Alert Systems (SSAS) defined by the International Maritime Organization (IMO) and is the most widely used service in fishing Vessel ...

  6. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    Vowels were omitted from the set to avoid spelling out any word that might be objectionable in any language, and some little-used letters were also omitted. It was revised by the Board of Trade in 1887, and was modified at the International Conference of 1889 in Washington, D.C. [ 1 ] The new international code of signals officially came into ...

  7. SOLAS Convention - Wikipedia

    en.wikipedia.org/wiki/SOLAS_Convention

    Many countries have turned these international requirements into national laws so that anybody on the sea who is in breach of SOLAS [5] V requirements may find themselves subject to legal proceedings. [6] Chapter I – General Provisions Surveying the various types of ships and certifying that they meet the requirements of the convention. [2]

  8. NAVTEX - Wikipedia

    en.wikipedia.org/wiki/NAVTEX

    A NAVTEX receiver prints an incoming message NAVTEX message for the Baltic Sea. NAVTEX (NAVigational TEleX), sometimes styled Navtex or NavTex, is an international automated medium frequency direct-printing service for delivery of navigational and meteorological warnings and forecasts, as well as urgent maritime safety information (MSI) to ships.

  9. General radiotelephone operator license - Wikipedia

    en.wikipedia.org/wiki/General_radiotelephone...

    Hold or qualify for a GROL, GMDSS Radio Maintainer's License, First Class Radiotelegraph Operator's Certificate, or Second Class Radiotelegraph Operator's Certificate. Those last two licenses are no longer issued. The Radiotelegraph Operator's License (T), issued in May 2013, also can have added to it a ship radar endorsement.