Rule 34 — Maneuvering and Warning Signals

33 CFR §83.34

§ 83.34 § 83.34 Maneuvering and warning signals (Rule 34). (a) When power-driven vessels are in sight of one another and meeting or crossing at a distance within half a mile of each other, each vessel underway, when maneuvering as authorized or required by these Rules: (i) Shall indicate that maneuver by the following signals on her whistle: (1) One short blast to mean “I intend to leave you on my port side”; (2) Two short blasts to mean “I intend to leave you on my starboard side”; and (3) Three short blasts to mean “I am operating astern propulsion”. (ii) Upon hearing the one or two blast signal of the other shall, if in agreement, sound the same whistle signal and take the steps necessary to effect a safe passing. If, however, from any cause, the vessel doubts the safety of the pr…

COLREGs Rule 34

COLREGs Rule 34 — Maneuvering and Warning Signals (a) When vessels are in sight of one another, a power-driven vessel underway, when maneuvering as authorized or required by these Rules, shall indicate that maneuver by the following signals on her whistle: − one short blast to mean “I am altering my course to starboard”; − two short blasts to mean “I am altering my course to port”; − three short blasts to mean “I am operating astern propulsion”. (b) Any vessel may supplement the whistle signals prescribed in paragraph (a) of this Rule by light signals, repeated as appropriate, while the maneuver is being carried out: (i) these light signals shall have the following significance: − one flash to mean “I am altering my course to starboard”; − two flashes to mean “I am altering my course to p…

COLREGs Rule 36

COLREGs Rule 36 — Signals to Attract Attention If necessary to attract the attention of another vessel, any vessel may make light or sound signals that cannot be mistaken for any signal authorized elsewhere in these Rules, or may direct the beam of her searchlight in the direction of the danger, in such a way as not to embarrass any vessel. Any light to attract the attention of another vessel shall be such that it cannot be mistaken for any aid to navigation. For the purpose of this Rule the use of high intensity intermittent or revolving lights, such as strobe lights, shall be avoided. Relationship to the Inland Rules: Inland Rule 36 differs from this rule — compare against 33 CFR 83.36 before answering a question that turns on which set applies.

COLREGs Rule 37

COLREGs Rule 37 — Distress Signals When a vessel is in distress and requires assistance she shall use or exhibit the signals described in Annex IV to these Regulations. DISTRESS SIGNALS 72 COLREGS Relationship to the Inland Rules: Inland Rule 37 differs from this rule — compare against 33 CFR 83.37 before answering a question that turns on which set applies.

COLREGs Rule 4

COLREGs Rule 4 — Application Rules in this Section apply to any condition of visibility. Relationship to the Inland Rules: Inland Rule 4 differs from this rule — compare against 33 CFR 83.04 before answering a question that turns on which set applies.