Moving a buoy on an ADMIRALTY Standard Nautical Chart
Updated: February 23, 2025
Summary
The video demonstrates how to accurately mark the new magnetic position on a nautical chart using a grid box and tracing. By following the guides and using a 7H pencil, the new position is precisely located and marked with an arrow. The process involves overlaying the tracing to confirm the updated position and adding the NM update number for accuracy. This method ensures that the new magnetic position is correctly identified on the chart, maintaining navigational precision.
Demonstration Start
Starting the demonstration by referencing the NM position on the chart using the grid box.
Guides and Tracing
Using guides on the tracing and chart to lay the tracing at its exact position, marking the new position with a 7H pencil.
Chart Adjustment
Removing the chart beneath to reveal the small circle on the marked spot, then drawing a neat arrow to link the new position.
Final Positioning
Laying the tracing back over the position, adding the NM update number.
FAQ
Q: What is the purpose of referencing the NM position on the chart using the grid box?
A: Referencing the NM position on the chart using the grid box helps ensure accurate placement and positioning of the update on the chart.
Q: Why is it important to use guides on the tracing and chart to lay the tracing at its exact position?
A: Using guides ensures precision and minimizes errors when placing the tracing at its exact position on the chart.
Q: What is the significance of marking the new position with a 7H pencil?
A: Marking the new position with a 7H pencil provides a clear and distinct indication of the updated location on the chart.
Q: Why is it necessary to reveal the small circle on the marked spot by removing the chart beneath?
A: Revealing the small circle by removing the chart helps visually confirm the exact position of the update.
Q: What is the purpose of drawing a neat arrow to link the new position after revealing the small circle?
A: Drawing a neat arrow visually connects the new position to the existing information on the chart for easy reference.
Q: Why is it important to lay the tracing back over the position and add the NM update number?
A: Laying the tracing back and adding the NM update number ensures that the update is correctly applied and documented on the chart.
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