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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. [citation needed] In 2024 the definitions of A3 and A4 were updated to account for the global coverage now provided by Iridium.
From 1996, the Recommendations were effectively split into two parts: the Model Regulations, which form a suggested drafting for laws and regulations on the transport of dangerous goods; and the Manual of Tests and Criteria, which contains technical information about methods of testing products to ascertain their hazards.
The GROL does not confer licensing authority to operate or maintain GMDSS, amateur radio stations, or radiotelegraph commercial stations. An endorsement that can be added to the GROL, as well as to both the GMDSS Maintainer and Radiotelegraph licenses, is the "Ship Radar Endorsement" that allows the holder to install, service, and maintain ...
An AIS-SART made by German company WeatherDock AG. An AIS-SART is a self-contained radio device used to locate a survival craft or distressed vessel by sending updated position reports using a standard Automatic Identification System (AIS) class-A position report.
(The word uses an approximation of the French pronunciation of the word silence, "See-LAWNCE."). Once the need for radio silence is finished, the controlling station lifts radio silence by the prowords "Seelonce FINI." [3] Disobeying a Seelonce Mayday order constitutes a serious criminal offence in most countries. The aviation equivalent of ...
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).
Inmarsat-C terminal (centre) Inmarsat-C is a two-way, packet data service operated by the telecommunications company Inmarsat which operates between mobile earth stations (MES) and land earth stations (LES).