PART B – STEERING AND SAILING RULES. Section | Subpart I – Conduct of Vessels in Any Condition of Visibility. Rule 4 – Application. Rule 5 – Look-Out. Part A – General. Rule 1. Application. (a)These Rules shall apply to all vessels upon the high seas and in all waters connected therewith navigable by seagoing . Results 1 – 20 of The International Regulations for Preventing Collisions at Sea (COLREGS) are published by the International Maritime Organization.

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Rule 2 Responsibility a Nothing in these Rules shall exonerate any vessel, or the owner, master, or crew thereof, from the consequences of any neglect to comply with these Rules or of the neglect of coolregs precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.

Such signal shall be answered with a prolonged blast by any approaching vessel that may be within hearing around the bend or behind the intervening obstruction. When the length of the tow measuring from the stern of the towing vessel to the after end of the tow exceeds meters, three such lights in a vertical line; ii sidelights; iii a sternlight. The sound pressure level shall be measured in that one-third octave band which determines the audibility range.

Rule 15 Colrregs Situation When two power-driven vessels are crossing so as to involve risk of collision, the vessel which has the other on her own starboard side shall keep out of the way and shall, if the circumstances of the case admit, avoid crossing ahead of the other vessel. Do Not Pass side Red over Red.

These additional station or signal lights or whistle signals shall, so far as possible, be such that they cannot be mistaken for any light, shape, or signal authorized elsewhere under these Rules.


The frequency of any one whistle shall differ from those of the others by at least 10 Hz. This does NOT say he is backing down or that he has specific motion of any kind.

The use or exhibition of any of the foregoing signals except for the purpose of indicating distress and need of assistance and the use of other signals which may be confused with any of the above signals is prohibited. Please help improve it or discuss these issues on the talk page.


The following signals, used or exhibited either together or separately, indicate distress and need of assistance:. It was also to clarify that if a vessel is obliged to cross traffic lanes it should do so as nearly as practicable at right angles to the 27 direction of the traffic flow.

A vessel shall be deemed to be overtaking, if in such a position to the other vessel that at night, it is possible to see one of the sidelights of that other vessel. Annex IV – Distress signals, which lists the signals indicating distress and need of assistance. There is no light for a short tow. Rule 22 Visibility of Lights The lights prescribed in these Rules shall have an intensity as specified in Section 8 of Annex I to these Regulations so as to be visible at the following minimum ranges: Rule 29 covers light requirements for pilot vessels.

Navigation rules to be followed by ships and other vessels at sea to prevent collisions between two or more vessels. Rule 13covers overtaking – the overtaking vessel should keep out of the way of the vessel being overtaken.

International Regulations for Preventing Collisions at Sea (COLREGS)

To ensure a wide variety of whistle characteristics, the fundamental frequency of a whistle shall be between the following limits: Any light to attract the attention of another vessel shall be such that it cannot be mistaken for any aid to navigation.


Unable to keep out of the way.

The majority is presented in the working languages. In sight of other vessel Inland Rules: The effectiveness colrregs the action shall be carefully checked until the other vessel is finally past and clear. The sound pressure level of the vessel’s own signal at listening posts shall not exceed dB A and so volregs as practicable shall not exceed dB A.

If there was a collision, there must have been a risk! This is in line with Rule 9 which states that “a vessel engaged in fishing shall not impede the passage of any other vessel navigating within a narrow channel or fairway. In the United States convened the first international maritime conference in Washington, D.

Vessels less than 12M may, instead of other lights, exhibit an all-round white light and side lights as most of the small boats you see daily. The whistles of a combined system shall be located at a distance apart of not more than meters and arranged to be sounded simultaneously.

In Regulation 10 was further amended to clarify the vessels which may colrregs the “inshore traffic zone.

General The lights mentioned herein shall, if exhibited in pursuance of Rule 26 dbe placed where they can best be seen. Every vessel colregx 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.