Dead Reckoning (DR) ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZThe 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 ReckoningPlotting positions (Trial)Understanding the impact wind and tide will have on your vessel allows you to consider your progress over a chart and make informed decisions. Learn how to plot positions using paper and electronic charts. Approximately 5 hoursPlotting PositionsUnderstanding the impact wind and tide will have on your vessel allows you to consider your progress over a chart and make informed decisions. Learn how to plot positions using paper and electronic charts. Approximately 5 hoursDead Reckoning« Back to Glossary Index