# 10.3 Cardinal Marks

**Cardinal marks:** 

Cardinal marks are used to indicate the cardinal directions (North, South, East, and West) and to provide a reference point for the ASVs. These marks will be placed at strategic locations along the course to help the ASVs navigate and stay on track and avoid potential dangers.

<figure><img src="https://2925525164-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FuX52mr8hwLKF6DqiMkqM%2Fuploads%2F6SZgfSX0BZv6QVB8UCwl%2Fimage.png?alt=media&#x26;token=186fdb74-28d9-4e46-9079-6fe4b39632fd" alt=""><figcaption></figcaption></figure>

**Specifications:**

The cardinal marks have the following specifications:

<table data-full-width="true"><thead><tr><th width="199">Marker type </th><th width="166">Colour</th><th width="231">Meaning</th><th>Additional comments</th></tr></thead><tbody><tr><td>Cardinal North</td><td>RAL9005 Black &#x26; RAL1003 Yellow</td><td>Passing on North side of mark</td><td>Black and yellow marks are 30 cm high from waterline</td></tr><tr><td>Cardinal East</td><td>RAL9005 Black &#x26; RAL1003 Yellow</td><td>Passing on East side of mark</td><td>Black and yellow marks are 20 cm high from waterline</td></tr><tr><td>Cardinal South</td><td>RAL9005 Black &#x26; RAL1003 Yellow</td><td>Passing on South side of mark</td><td>Black and yellow marks are 30 cm high from waterline</td></tr><tr><td>Cardinal West</td><td>RAL9005 Black &#x26; RAL1003 Yellow</td><td>Passing on West side of mark</td><td>Black and yellow marks are 20 cm high from waterline</td></tr></tbody></table>

<table><thead><tr><th width="203">Part</th><th width="221.33333333333331" align="center">Diameter</th><th align="center">Height</th></tr></thead><tbody><tr><td>Bouy</td><td align="center">40 cm</td><td align="center">40 cm (20 cm above waterline)</td></tr><tr><td>Cylindrical mark</td><td align="center">14 cm</td><td align="center">40 cm</td></tr><tr><td>Total from waterline</td><td align="center">-</td><td align="center">60 cm</td></tr></tbody></table>

A dataset of photos of the markers (North, East, West, South) will be provided.


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