Event label Optional label Method/Device Abbreviation Sensor URI Date/Time Latitude Longitude Elevation Date/Time end Latitude end Longitude end Elevation end Comment M6/4-track Underway cruise track measurements CT 1987-12-28T00:00:00 5.24670 -3.98570 1988-01-12T00:00:00 14.67950 -17.42320 Abidjan - Dakar