Moving a buoy on an ADMIRALTY Standard Nautical Chart

Summary

This instructional video demonstrates how to accurately reposition a boy on a nautical chart using a grid box for reference. Viewers will learn to trace the boy's original and new locations using latitude and longitude guides, mark the new position with a pencil, and connect the two points with a neat arrow. The process emphasizes verification by laying the tracing back over the chart and concludes with the addition of the NM update number in the Notices to Mariners section, ensuring accurate navigation.

Takeaways

• 🗺️ The process begins by referencing the NM position using a grid box on the nautical chart.
• 📏 Latitude and longitude guides are essential for tracing the boy's current position accurately.
• ✏️ Use a 7H pencil to mark the new position of the boy based on the tracing.
• 📜 After marking, remove the tracing paper to reveal the underlying chart.
• 🟣 Draw a small circle with a magenta .18 pen at the new position of the boy.
• ➡️ A neat arrow should connect the boy's existing position to the new position for clarity.
• 🔍 It’s important to lay the tracing back over the chart to verify the accuracy of the new position.
• ✅ Once confirmed, ensure all updates have been applied before proceeding.
• 📝 Finally, add the NM update number to the 'Notices to Mariners' section on the chart.
• 📍 This process maintains navigational safety and accuracy on nautical charts.

Q & A

What is the first step in moving the boy's position on the chart?

The first step is to use the grid box to reference the NM position on the chart.

How do you determine the new position of the boy?

You determine the new position by using latitude and longitude guides on the tracing and laying it on the chart.

What tool is recommended for marking the new position on the chart?

A 7H pencil is recommended for marking the new position through the tracing onto the chart.

What should be done after marking the new position with a pencil?

After marking the new position, you should remove the tracing to reveal the chart.

What color pen should be used to draw a small circle on the marked spot?

A magenta .18 pen should be used to draw a small circle on the marked spot.

How do you visually connect the existing position and the new position of the boy?

You draw a neat arrow linking the existing position of the boy with the new position.

What should you do to verify the new position of the boy?

You should lay the tracing back over the chart to check that the new boy position is correct.

What is the final step after applying all the updates to the chart?

The final step is to add the NM update number to the chart's notices to Mariners section in the bottom left corner.

Why is it important to check the new position after marking it?

It is important to check the new position to ensure accuracy and correctness before finalizing the updates.

What does NM stand for in the context of this chart update?

In this context, NM stands for Notices to Mariners, which provides updates and corrections to maritime charts.