Skip to main content
CaptainsGround

Rules of the Road

Rule 10 — Traffic Separation Schemes

Appears on 50% of examsDifficulty 4/542 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.

33 CFR 83.10COLREGs Rule 10

Source excerpts#

33 CFR §83.10

Traffic separation schemes (Rule 10). (a) This Rule applies to traffic separation schemes and does not relieve any vessel of her obligation under any other Rule in subchapter E. (b) A vessel using a traffic separation scheme shall: (i) Proceed in the appropriate traffic lane in the general direction of traffic flow for that lane; (ii) So far as practicable keep clear of a traffic separation line or separation zone; (iii) Normally join or leave a traffic lane at the termination of the lane, but when joining or leaving from either side shall do so at as small an angle to the general direction of traffic flow as practicable. (c) A vessel shall, so far as practicable, avoid crossing traffic lanes but if obliged to do so shall cross on a heading as nearly as practicable at right angles to

COLREGs Rule 10

Traffic Separation Schemes (a) This Rule applies to traffic separation schemes adopted by the Organization and does not relieve any vessel of her obligation under any other rule. (b) A vessel using a traffic separation scheme shall: (i) proceed in the appropriate traffic lane in the general direction of traffic flow for that lane; (ii) so far as practicable keep clear of a traffic separation line or separation zone; (iii) normally join or leave a traffic lane at the termination of the lane, but when joining or leaving from either side shall do so at as small an angle to the general direction of traffic flow as practicable. (c) A vessel shall, so far as practicable, avoid crossing traffic lanes but if obliged to do so shall cross on a heading as nearly as practicable at right angles to the

COLREGs Rule 10(a)

Traffic Separation Schemes (a) This Rule applies to traffic separation schemes adopted by the Organization and does not relieve any vessel of her obligation under any other rule. Relationship to the Inland Rules: Inland Rule 10 is word-for-word identical to this rule.

COLREGs Rule 10(b)

Traffic Separation Schemes (b) A vessel using a traffic separation scheme shall: (i) proceed in the appropriate traffic lane in the general direction of traffic flow for that lane; (ii) so far as practicable keep clear of a traffic separation line or separation zone; (iii) normally join or leave a traffic lane at the termination of the lane, but when joining or leaving from either side shall do so at as small an angle to the general direction of traffic flow as practicable. Relationship to the Inland Rules: Inland Rule 10 is word-for-word identical to this rule.

COLREGs Rule 10(c)

Traffic Separation Schemes (c) A vessel shall, so far as practicable, avoid crossing traffic lanes but if obliged to do so shall cross on a heading as nearly as practicable at right angles to the general direction of traffic flow. Relationship to the Inland Rules: Inland Rule 10 is word-for-word identical to this rule.

COLREGs Rule 10(d)

Traffic Separation Schemes (d) (i) A vessel shall not use an inshore traffic zone when she can safely use the appropriate traffic lane within the adjacent traffic separation scheme. However, vessels of less than 20 meters in length, sailing vessels and vessels engaged in fishing may use the inshore traffic zone. (ii) Notwithstanding subparagraph (d)(i), a vessel may use an inshore traffic zone when en route to or from a port, offshore installation or structure, pilot station or any other place situated within the inshore traffic zone, or to avoid immediate danger. Relationship to the Inland Rules: Inland Rule 10 is word-for-word identical to this rule.

Practice this topic#

One real exam question on this topic, cited to source. No sign-up.

Rule 10 — Traffic Separation Schemes

Under both the International and Inland Rules, a vessel not using a traffic separation scheme shall ______.

Study this topic#

This guide is the exam-facing view of the topic: what it is tested on and which sources it comes from. The lesson explains the idea; the drill tests it.

The full lesson covers this topic with citation popovers, and there are 42 drill questions behind it.

Drill Rule 10 — Traffic Separation Schemes against the real exam.

Real exam questions. No signup, no card.

Was this page helpful?