Questions and Answers
Which symbol is used to indicate a fix on the chart?
What symbol is used to represent the Dead Reckoning (DR) position?
How is an Estimated Position (EP) shown on the chart?
What additional information is typically noted alongside a fix symbol on a chart?
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What might be added to a fix to indicate it has been obtained by a method other than visual bearings?
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Which method uses a small cross to originate if a fix or Estimated Position is not available?
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Study Notes
Chart Work Symbols
- Positions: A fix is represented on the chart by a dot surrounded by a circle, with the time alongside, and position lines passing through the fix if necessary, and may have a suffix to indicate the method used to obtain it (e.g., not by visual bearings).
- Dead Reckoning (DR): The DR position is shown on the chart as a small line across the course being steered, with the time alongside, and may originate from a small cross if a fix or Estimated Position is not available.
- Estimated Position (EP): The EP is represented on the chart by a dot surrounded by a small triangle, with the time alongside, and the ground track of the ship passing through the dot.
Additional Information
- Standard symbols should be used for all forms of chart work to ensure clarity and understanding among all who practice it.
- Common chart work symbols are detailed in the Manual of Navigation, Appendix 9.
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Description
This quiz covers the standard symbols used in navigation chart work, including those for positions, as outlined in the Manual of Navigation Appendix 9.
