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This is the bit that everyone needs to know. It’s divided into three sections and is the only subdivided part of the rule book. Each section focuses on our ability to see one another (or not):
Section I – Conduct of vessels in any conditions of visibility (rules 4 to 10),
Section II – Conduct of vessels in sight of one another (Rules 11 to 18),
Section III – Conduct of vessels in restricted visibility (Rule 19).
Each section starts with a rule outlining the visibility conditions under which the rules apply.
Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision. We can only hope to avoid something if we know it’s…
Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions. In determining a safe speed the following factors shall be among those taken into account: Rule 6 is self-explanatory,…
Well, you know what they say about assumptions? This rule confirms that we cannot make any and assume the worst unless we explicitly know otherwise. It also reaffirms some wording in Rule 5 – Look out, particularly the requirement to use Radar (if fitted), but not rely on it if it produces unverifiable results. It…
This rule outlines how to take action, not what to do. Primarily focussed on the give-way vessel; however, both vessels in a collision situation have responsibilities, so the rule applies whether give-way or stand-on. It can be summarised by the following: Positive action Any action taken to avoid a collision should be ‘positive’. When referring…
Traffic separation schemes (TSSs) are marked on charts and usually have no physical boundaries, although buoys may mark particular points, often with special marks. While no one is obligated to use them, and vessels under 20m are not explicitly banned, anyone entering or in a TSS must abide by its rules. Many skippers choose to…
Rules in this Section apply to vessels in sight of one another. This rule introduces the section and clarifies that everything in Part B—Section II is concerned with what happens when we are in sight of another vessel (specifically, what actions should be taken when we can see another vessel).
If you belive the Earth is flat, you're about to fall of the end...
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