INMATRAT-C ship earth stations installed on board GMDSS ships (ships fully complying with the requirements of Chapter IV of the 1988 SOLAS Convention) should comply with performance standards adopted by IMO (IMO Assembly Resolution A.663(16)).

IMO Resolution A.663(16), paragraph 3.2 states that INMARSAT-C Ship Earth Station should be possible to initiate and make distress calls from the position from which the ship is normally navigated and from at least one other position designated for distress alerting.

Bearing in mind such performance standards, the Singapore Government has notified that the ship owner or operator should define this secondary position in accordance with the distress operating procedure of the ship in addition to the position from which the ship is normally navigated for distress alerting.

The Surveyor of the Society when requested to conduct a SR survey of a Singapore GMDSS ship will ascertain that the ship has a secondary position defined for distress alerting by its INMARSAT-C ship earth station. It is recommended that appropriate actions should be taken for Singapore GMDSS ships accordingly.


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