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Navigation Rules
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NAVIGATION RULES

While reading the Navigation Rules on this site, you should be aware of some formatting and layout conventions.

    - If a paragraph or word is italicized, that means there is no corresponding paragraph or word in the other set of Rules.  The set of Rules the paragraph or word applies to will be at the end of the italicized text and look like this: [Intl] or [Inld]

(e) A vessel proceeding under sail when also being propelled by machinery shall exhibit forward where it can best be seen a conical shape, apex downwards.  A vessel of less than 12 meters in length is not required to exhibit this shape, but may do so. [Inld]

    - If the paragraph numbering differs between International and Inland Rules of a similar topic, the numbering will look like this: (d/f).  In all cases, the International Rule numbering will be on the left and the Inland Rule numbering will be on the right.

    - If the International and Inland Rules are significantly different, such that the section must be viewed separate paragraphs, the Rule will look like this:  

 (i) a vessel intending to overtake another shall in compliance with Rule 9(e)(i) indicate her intention by the following signals on her whistle:
 - two prolonged blasts followed by one short blast to mean "I intend to overtake you on your starboard side";...
 (i) a power-driven vessel intending to overtake another power-driven vessel shall indicate her intention by the following signals on her whistle:
 - one short blast to mean "I intend to overtake you on your starboard side";...

In all cases, the International Rule will be on the left and the Inland Rule will be on the right.

    - Minor differences between Rules will be delineated within the text next to each other.  In all cases, the International Rule will be on the left and the Inland Rule will be on the right.  For example, if the bulk of the text was the same between a particular International and Inland Rule, but referenced another Rule differently, the paragraph would look something like this:

(c) Every vessel shall have due regard to the prevailing circumstances and conditions of restricted visibility when complying with [the Rules of Section I of this Part / Rules 4 through 10].

    - Insignificant differences between sets of Rules, such as "1" vs. "one" or missing words that don't change the meaning of a Rule, will not be identified.

If some words have red text, it means additional information on that word or words can be found by clicking on the link. A popup window will open with a definition or graphic to better explain the highlight.