Rule 7 — Risk of Collision
Appears on 85% of examsDifficulty 3/552 drill questions
On the paperQ100 / Q30050 questions90% to pass, 5 wrong allowed
Authoritative sources#
Every answer on this topic traces back to the public rule corpus below.
Source excerpts#
33 CFR §83.05
Look-out (Rule 5). 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.
33 CFR §83.07
Risk of collision (Rule 7). (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. (b) Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects. (c) Assumptions shall not be made on the basis of scanty information, especially scanty radar information. (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 ch…
COLREGs Rule 7
Risk of Collision (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. (b) Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects. (c) Assumptions shall not be made on the basis of scanty information, especially scanty radar information. (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) suc…
COLREGs Rule 7(a)
Risk of Collision (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. Relationship to the Inland Rules: Inland Rule 7 is word-for-word identical to this rule.
COLREGs Rule 7(b)
Risk of Collision (b) Proper use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and radar plotting or equivalent systematic observation of detected objects. Relationship to the Inland Rules: Inland Rule 7 is word-for-word identical to this rule.
COLREGs Rule 7(d)
Risk of Collision (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. Steering and Sailing Rules Relationship to the Inland Rules: Inland Rule 7 is word-for-word identical to this rule.
Practice this topic#
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Under the Inland Navigation Rules, when must a vessel treat risk of collision as existing?
Study this topic#
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The full lesson covers this topic with citation popovers, and there are 52 drill questions behind it.
Drill Rule 7 — Risk of Collision against the real exam.
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