RULE 7 - RISK ASSESSMENT (RADAR)
COLREGS - The Rules are divided into five parts A-E - General Rules (A), Steering and Sailing (B), Lights and Shapes (C), Sound and Light (D) and Exemptions (E).
Rule 7 covering Risk of Collision, which warns that "assumptions shall not be made on the basis of scanty information, especially scanty radar information:"
(a) Every vessel shall use all available means appropriate to the prevailing circumstances and conditions to determine if risk of collision exists. If there is any doubt such risk shall be deemed to exist
(d) In determining if risk of collision exists the following considerations shall be among those taken into account:
(i) such risk shall be deemed to exist if the compass bearing of an approaching vessel does not appreciably change;
(ii) such risk may sometimes exist even when an appreciable bearing change is evident, particularly when approaching a very large vessel or a tow or when approaching a vessel at close range.
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.
risk assumptions shall not be made on scanty (radar) information.
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
International Maritime Organization (IMO)
4 Albert Embankment, London SE1 7SR
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