Published:25th October 2024 Last Updated:25th October 2024 Reading Time: 1 minute Dead Reckoning (DR) The vessel’s approximate position derived solely from the compass course steered and distance run according to the log. It makes no allowance for leeway or tidal drift. Related Content: How to plot Dead Reckoning« Glossary IndexRelated terms:Glossary: DistanceGlossary: CompassGlossary: VesselGlossary: LeewayGlossary: HeadingGlossary: DriftGlossary: RunGlossary: Log