Rule 8 covers action to be taken to avoid collision.

(a) Any action taken to avoid collision shall be taken in accordance with the Rules of this Part and shall, if the circumstances of the case admit, be positive, made in ample time and with due regard to the observance of good seamanship.

(b) Any alteration of course and/or speed to avoid collision shall, if the circumstances of the case admit, be large enough to be readily apparent to another vessel observing visually or by radar; a succession of small alterations of course and/or speed should be avoided.

(c) If there is sufficient sea-room, alteration of course alone may be the most effective action to avoid a close-quarters situation provided that it is made in good time, is substantial and does not result in another close-quarters situation.

(d) Action taken to avoid collision with another vessel shall be such as to result in passing at a safe distance. The effectiveness of the action shall be carefully checked until the other vessel is finally past and clear.

(e) If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion.

(f)

(i) A vessel which, by any of these Rules, is required not to impede the passage or safe passage of another vessel shall, when required by the circumstances of the case, take early action to allow sufficient sea-room for the safe passage of the other vessel.

(ii) A vessel required not to impede the passage or safe passage of another vessel is not relieved of this obligation if approaching the other vessel so as to involve risk of collision and shall, when taking action, have full regard to the action which may be required by the Rules of this Part.

(iii) A vessel the passage of which is not to be impeded remains fully obliged to comply with the Rules of this Part when the two vessels are approaching one another so as to involve risk of collision.

Part A - General (Rules 1-3) & Part B- Steering and Sailing Section 1 - Conduct of vessels in any condition of visibility (Rules 4-10)

Rule 1 states that the rules apply to all vessels on the high seas and connected waters.
Rule 2 covers the responsibility of the master, owner and crew to comply with the rules.
Rule 3 includes definitions of applicable water craft (vessels).
Rule 4 says the section applies in any conditions of visibility.
Rule 5 every vessel shall at all times maintain a proper look-out by sight and hearing.
Rule 6 deals with safe speed.

Rule 7 risk assumptions shall not be made on scanty (radar) information.
Rule 8 covers action to be taken to avoid collision.
Rule 9 vessels proceeding along a narrow channel should keep to starboard.
Rule 10 deals with the behaviour of vessels in or near traffic separation schemes. 

Sections II & III Conduct of Vessels in Sight of one another

Part C - LIGHTS & SHAPES (Rules 20-31)

Part D - SOUND AND LIGHT SIGNALS - DEFINITIONS (Rules 32-37)

Part E - EXEMPTIONS - Rule 38

Part F - Convention compliance verification provisions Rules 39 - 41

Annex I - Positioning and technical details of lights and shapes

Annex II - Additional signals for fishing vessels fishing in close proximity
Annex III - Technical details of sounds signal appliances
Annex IV - Distress signals indicating distress and need of assistance

International Maritime Organization (IMO)

4 Albert Embankment, London SE1 7SR

United Kingdom
+44 (0) 20 7735 7611

LINKS & REFERENCE

http://www.solarnavigator.net/boats/collision_at_sea_regulations_colregs.htm

https://www.bluebird-electric.net/COLREGS_International_Regulations_for_Preventing_Collisions_at_Sea_1972.htm

http://www.solarnavigator.net/boats/collision_at_sea_regulations_colregs.htm

https://www.bluebird-electric.net/COLREGS_International_Regulations_for_Preventing_Collisions_at_Sea_1972.htm