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  2. Global Maritime Distress and Safety System - Wikipedia

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

    Prior to the GMDSS, the number and type of radio safety equipment ships had to carry depended upon its tonnage. With GMDSS, the number and type of radio safety equipment ships have to carry depends upon the GMDSS areas in which they travel. GMDSS sea areas are classified into the following four areas: A1, A2, A3 and A4.

  3. List of Navtex stations - Wikipedia

    en.wikipedia.org/wiki/List_of_Navtex_stations

    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 list of Navtex stations.

  4. General radiotelephone operator license - Wikipedia

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

    The GROL is the most common FCC commercial license, accounting for about 80% of those issued by the commission, because of the wide range of positions that require it. Like all FCC commercial licenses, the GROL is issued for the lifetime of the licensee. The GROL conveys all of the operating authority of the Marine Radio Operator Permit (MROP).

  5. Marine VHF radio - Wikipedia

    en.wikipedia.org/wiki/Marine_VHF_radio

    DSC equipment, a part of the Global Maritime Distress Safety System (GMDSS), provides all the functionality of voice-only equipment and, additionally, allows several other features: The ability to call another vessel using a unique identifier known as a Maritime Mobile Service Identity (MMSI). This information is carried digitally and the ...

  6. Search and rescue transponder - Wikipedia

    en.wikipedia.org/wiki/Search_and_rescue_transponder

    A standard SART 9 GHz radar transponder, produced by Jotron, on board a Norwegian ferry. The unit is 251 mm high. A search and rescue transponder (SART) is a self-contained, waterproof transponder intended for emergency use at sea.

  7. International Aeronautical and Maritime Search and Rescue ...

    en.wikipedia.org/wiki/International_Aeronautical...

    The International Aeronautical and Maritime Search and Rescue (IAMSAR) Manual is a manual for organization and operation of maritime and aviation search and rescue.. The IAMSAR Handbook is jointly published by two UN agencies:

  8. Transportation Worker Identification Credential - Wikipedia

    en.wikipedia.org/wiki/Transportation_Worker...

    Each card contains a Federal Agency Smart Credential Number (FASC-N), which uniquely identifies each card in Federal databases, encoded on its ICC. On the faulty cards, the FASC-N has not been fully encoded, causing the readers to view the card as an invalid card. The agency has posted a list online with the serial numbers of affected cards.

  9. Digital selective calling - Wikipedia

    en.wikipedia.org/wiki/Digital_Selective_Calling

    A Sailor VHF DSC unit. Digital selective calling (DSC) is a standard for transmitting predefined digital messages via the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems.