Global
Maritime Distress and Safety System (GMDSS)
The Global Maritime Distress and Safety System (GMDSS) Handbook,
produced by the International Maritime Organization (IMO) defines GMDSS as
follows:- The basic concept of (GMDSS) is that search and rescue authorities
ashore, as well as shipping in the immediate vicinity of the ship in distress,
will be rapidly alerted to a distress incident so that they can assist in a
co-ordinated SAR operation with the minimum delay. The system also provides for
agency and safety communications and the promulgation of Maritime Safety
Information (MSI) - navigational and meteorological warnings and forecasts and
other urgent safety information to ships. In other words, every ship is able,
irrespective of the area in which it operates, to perform those communication
functions which are essential for the safety of the ship itself and of other
ships operating in the same area.
Components of GMDSS
GMDSS consists
of several different safety systems based around different communications
technologies. These include Digital Selective Calling (DSC), NAVTEX, INMARSAT,
EPIRBs SARTs VHF and HF Communication.
Full operation of the Global Maritime Distress and Safety System came
into fourse on the 1st February 1999. Under IMO legislation, all passenger
vessels had to be fitted with the necessary equipment by 1995, and all vessels
over 300grt to be GMDSS equipped by the 1st February deadline. National
administrations are also being encouraged to provide the necessary shore based
infrastructure in sufficient time.
Benefits Under the GMDSS, all
Distress and Safety communication will be automated and watchkeeping on
traditional voice and Morse code frequencies become history. At the press of a
button, a ship can send its identity, position and nature of distress by either
satellite or terrestrial communication. It will then be up to a shore based
Rescue Co-ordination Centre (RCC) to alert vessels in the area to go to the aid
of the casualty. This co-ordinating role of the RCC is a new one. Under the
SOLAS 1974 system, ships in the area were required to monitor for distress
alerts and then respond directly. The GMDSS now makes this the responsibility
of the RCC. GMDSS also changes the nature of Routine and Safety Radio
operation. These become fully automatic, enabling ships to deal with all
incoming and outgoing ships radio communication. It is no longer be
necessary to sail with a specialist radio officer onboard.