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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.
On the ship the second officer is the officer that works under the master, i.e. the captain of the ship, and shoulders the responsibility of checking the functionality of all the navigational equipment, such as the echo-sounder, radar, ECDIS, AIS, and on some vessels even the GMDSS radio equipment; however, recently it has been observed that ...
International Mobile Satellite Organization (IMSO) is the oversight body of the satellite communications elements of the Global Maritime Distress and Safety System (GMDSS) established by the IMO designed to provide a worldwide system for automated emergency signal communication for ships at sea. IMSO ensures that the provision of maritime ...
The various procedures for radio direction finding to determine position at sea are no longer part of the maritime safety system GMDSS, which has been in force since 1999. The striking cross frame antenna with attached auxiliary antenna can only be found on the signal masts of some older ships because they do not interfere there and dismantling ...
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.
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).
INDoS (Indian National Database Of Seafarers) is a computerised national database of Indian seafarers for use by statutory authorities such as Flag State, Port State, Immigration & Employers [clarification needed] etc., to prevent the fraudulent issue of certificates.
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