RECALLING Article 16(j) of the Convention on the International Maritime Organization concerning
the functions of the Assembly in relation to regulations concerning maritime safety,
RECALLING FURTHER Assembly resolution A.423(Xl) on radar beacons and shipborne
RECOGNIZING that the response from radar transponders used for search and rescue purposes
should be distinctive when appearing on a radar display,
HAVING CONSIDERED the recommendation made by the Maritime Safety Committee at its
1. ADOPTS the Recommendation on the Signal Characteristic of Radar Transponders to Assist in
Search and Rescue Operations, set out in the Annex to the present resolution;
2. RECOMMENDS Member Governments to ensure that the signal characteristic set out in the
Annex is not used for any purpose other than search and rescue.
RECOMMENDATION ON THE SIGNAL CHARACTERISTIC OF RADAR
TRANSPONDERS TO ASSISTS IN SEARCH AND RESCUE OPERATIONS
Radar transponders intended to be used for search and rescue purposes should be capable of
transmitting signals which will appear on a radar display as a series of equally spaced dots.