Self-Locating Datum Marker Buoys
United States Coast Guard
Self-Locating Datum Marker Buoys (SLDMBs) are oceanographic surface drifting buoys that are ship or air deployable. The United States Coast Guard (USCG) deploys approximately 500-600 SLDMBs annually for its Search and Rescue (SAR) operations. Service Argos receives and stores SLDMB data which is collected via web services by the SLDMB system. SLDMB positional data is used to estimate the movement of a search object within a search area. Historical data is stored and can be used to determine ocean currents. It is available through the USCG SLDMB website.