The most probable position of a search object, corrected for drift,at any specific time."point de repére ou DATUM". (Marine SAR)
Maritime Activity and Risk Investigation Network (MARIN) Research Group, Glossary (Covering Maritime, Geographic Information System GIS, Search & Rescue SAR, Weather, Risk), Industrial Engineering, Dalhousie University, Halifax, NS, Canada 2004. http://www.marin-research.ca/english/research/glos sary/index.php, (Mrtm&RInvtn - Canad) {542}