Inserting a legend onto an ADMIRALTY Standard Nautical Chart

ADMIRALTY

10 Jul 201701:59

Summary

TLDRThis instructional video script outlines the process of inserting a legend on a chart. It instructs viewers to use a grid box for positioning, mark the legend's text lines with a 7H pencil, and then trace over with a 2B pencil and ruler for guidelines. The legend text should be written with a magenta 1 18 pen, ensuring clear distinction between upper and lower case letters. The script emphasizes that legends should be horizontal unless specified otherwise. Finally, it details how to check the legend's placement and update the chart's Notices to Mariners section.

Takeaways

📍 Use the grid box to determine the NM position on the chart.
🧭 Employ latitude and longitude guides to accurately place the tracing on the chart.
✏️ Use a 7H pencil to mark the start and end of all lines of text for the legend.
🗂️ Remove the tracing to reveal the chart after marking.
📏 Draw guidelines with a 2B pencil and a ruler between marked points for each line of text.
🖋️ Write the legend text with a magenta 1.18 pen, ensuring clear distinction between upper and lower case.
➡️ Legends should be written horizontally unless specified otherwise by the NM.
🗒️ Erase all pencil markings after the legend is written.
🔍 Overlay the tracing to verify the correct placement of the legend.
📝 Add the NM update number to the Notices to Mariners section after all updates are applied.

Q & A

What is the purpose of using a grid box in the context of the script?
-The grid box is used to reference the NM (Nautical Mile) position on the chart, which helps in accurately placing the legend on the chart.
Why are latitude and longitude guides used in the process described?
-Latitude and longitude guides are used to trace and place the legend on the chart at its exact location, ensuring accuracy in positioning.
What type of pencil is recommended for marking the start and end of lines of text on the chart?
-A 7H pencil is recommended for marking the start and end of all lines of text within the legend onto the chart.
Why is it necessary to remove the tracing after marking the text lines?
-The tracing is removed to reveal the chart underneath, allowing for the drawing of guidelines and the writing of the legend text without the tracing obstructing the process.
What tools are used to draw guidelines between the marked points on the chart?
-A 2B pencil and a ruler are used to draw guidelines between the marked points for each line of text on the chart.
Which pen is specified for writing the legend text, and what color should it be?
-A magenta 1 18 pen is specified for writing the legend text, ensuring clear and distinguishable writing.
Why is it important to distinguish between upper and lower case when writing the legend text?
-Distinguishing between upper and lower case is important for clarity and to ensure that the legend text is written accurately as it appears on the tracing.
What is the rule regarding the orientation of legends on a chart?
-Legends should always be written horizontally unless the textual NM instructs otherwise, indicating that the orientation should follow specific instructions if provided.
Why is it necessary to erase all pencil markings after completing the legend insertion?
-Erasing all pencil markings is important for a clean and professional final appearance of the chart, ensuring that no temporary markings remain.
How can one verify that the legend has been inserted in the correct position on the chart?
-By laying the tracing back over the chart, one can check that the legend has been inserted in the correct position, ensuring accuracy in the final product.
Where should the NM update number be added once all updates to the chart have been applied?
-The NM update number should be added to the chart's Notices to Mariners section, located in the bottom left corner of the chart.

Outlines

00:00

📈 Inserting a Chart Legend

This paragraph provides a step-by-step guide on how to insert a legend onto a chart. It begins with using the grid box to locate the NM position and then marking the start and end of text lines with a 7H pencil. Afterward, guidelines are drawn between these points with a 2B pencil and a ruler. The legend text is then written using a magenta 1 18 pen, ensuring clear distinction between upper and lower case letters. It is emphasized that legends should be written horizontally unless specified otherwise. Once the legend is correctly placed, pencil markings are erased, and the tracing is checked for accuracy. Finally, the NM update number is added to the chart's notices to Mariners section.

Mindmap

Keywords

💡grid box

A 'grid box' in the context of the video script refers to a tool or method used for referencing positions on a chart. It is likely a part of a navigational or cartographic system that helps in accurately placing elements like legends. The script mentions using the grid box to reference the 'NM' (nautical mile) position, indicating its importance in the process of chart annotation.

💡latitude and longitude

Latitude and longitude are fundamental geographical coordinates that specify locations on the Earth's surface. In the script, these terms are used to guide the placement of the legend on the chart, ensuring that it is laid out accurately according to the chart's coordinate system. This is crucial for navigational charts where precise location is key.

💡tracing

Tracing in this script is a process where a copy of the legend text is made onto a transparent or semi-transparent material. This is then used to transfer the legend onto the chart. The script mentions 'the tracing' and 'lay the tracing to its exact location,' which shows that tracing is a step in the process of accurately placing the legend on the chart.

💡7H pencil

A '7H' pencil is a type of pencil with a very hard lead, which is suitable for making light marks that can be easily erased. The script specifies using a 7H pencil to mark the start and end of lines of text within the legend. This choice of pencil ensures that the marks are not too dark or permanent, allowing for adjustments without damaging the chart.

💡2B pencil

A '2B' pencil has a softer lead than a 7H, which makes darker marks. In the script, a 2B pencil is used along with a ruler to draw guidelines on the chart, which are more visible and provide a clear guide for writing the legend text. The use of a 2B pencil here is to ensure that the guidelines are clear and precise.

💡magenta1 18 pen

The 'magenta1 18 pen' is a specific type of pen used for writing on the chart. The number '18' likely refers to the pen's size or width. The script instructs to use this pen to write the legend text, indicating that it is the appropriate tool for the final, permanent application of the legend onto the chart.

💡upper and lower case

The terms 'upper case' and 'lower case' refer to the different forms of letters in written language, where 'upper case' are the larger, capital letters, and 'lower case' are the smaller, standard letters. The script emphasizes the importance of distinguishing between these in the legend text, which is crucial for clarity and readability, especially in navigational charts where precision is key.

💡horizontally

In the context of the script, 'horizontally' refers to the orientation of the legend text. The instruction that legends should be written horizontally, unless otherwise instructed by the textual NM, highlights the standard practice in chart annotation to maintain readability and consistency.

💡eraser

An 'eraser' is a tool used for removing pencil marks. In the script, it is mentioned as a final step to remove all pencil markings after the legend has been inserted correctly. This ensures that the final chart is clean and free from any temporary markings, leaving only the permanent, accurate annotations.

💡NM update number

The 'NM update number' refers to a specific identifier for updates made to the chart. The script mentions adding this number to the 'charts notices to Mariners section,' which is a part of the chart where updates and changes are recorded. This is important for maintaining the chart's currency and accuracy, informing users of the latest revisions.

💡notices to Mariners

Notices to Mariners is a section found on nautical charts where important updates and notices are provided to those navigating the waters. The script specifies adding the NM update number to this section, which is a critical step in ensuring that all users of the chart are aware of the latest changes and can navigate safely.

Highlights

Demonstrates the process of inserting a legend on a chart

Utilizes the grid box for referencing NM position

Employs latitude and longitude guides for precise placement

Tracing the legend to its exact location on the chart

Marking the start and end of text lines with a 7H pencil

Removing the tracing to reveal the chart

Drawing guidelines with a 2B pencil and ruler

Writing legend text with a magenta1 18 pen

Ensuring clear distinction between upper and lower case

Legends should be written horizontally unless instructed otherwise

Erasing all pencil markings after writing

Checking the legend's correct position with the tracing

Adding the NM update number to the chart's notices to Mariners section

Ensuring the legend is not arrowed to a position

Using a 7H pencil for marking text lines for precision

The importance of using a magenta1 18 pen for writing the legend

The necessity of erasing pencil markings for a clean chart appearance

The final step of verifying the legend's accuracy on the chart