- 21. Visibility of lights in vessels over 20 m and under 50 m
- (Rule 22 (Visibility of lights))
- 22. Visibility of lights in vessels over 50 m
- (Rule 22 (Visibility of lights))
- 23. <span class="highlight">Towing</span> light
- (Rule 21 (Definitions))
- 24. Sound signals of vessels engaged in <span class="highlight">towing</span> operation in restricted visibility
- (Rule 35 (Sound signals in restricted visibility))
- 25. Annex I - Positioning and technical details of lights and shapes
- (Annex I)
- ... light at a distance of 1000 m from the stem when viewed from sea-level. (c) The masthead light of a power-driven vessel of 12 m but less than 20 m in length shall be placed at a height above the gunwale of not less than 2.5 m. (d) A power-driven vessel of less than 12 m in length may carry the uppermost light at a height of less than 2.5 m above the gunwale. When, however, a masthead light is carried in addition to sidelights and a sternlight or the all-round light prescribed in Rule 23 (d)(i) is carried in addition to sidelights, then such masthead light or all-round light shall be carried at least 1 m higher than the sidelights. (e) One of the two or three masthead lights prescribed for a power-driven vessel when engaged in towing or pushing another vessel shall be placed in the same position as either the forward masthead light or the after masthead light; provided that, if carried on the aftermast, the lowest after masthead lights shall be at least 4.5 m vertically higher than ...
- 26. Rule 35 (Sound signals in restricted visibility)
- (Rule 35 (Sound signals in restricted visibility))
- In or near an area of restricted visibility, whether by day or night, the signals prescribed in this Rule shall be used as follows: (a) A power-driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast. (b) A power-driven vessel underway but stopped and making no way through the water shall sound at intervals of not more than 2 minutes two prolonged blasts in succession with an interval of about 2 seconds between them. (c) A vessel not under command, a vessel restricted in her ability to manoeuvre, a vessel constrained by her draught, a sailing vessel, a vessel engaged in fishing and a vessel engaged in towing or pushing another vessel shall, instead of the signals prescribed in paragraphs (a) or (b) of this Rule, sound at intervals of not more than 2 minutes three blasts in succession, namely one prolonged followed by two short blasts. (d) A vessel engaged in fishing, when at anchor, and a vessel restricted in her ability ...
- 27. Rule 27 (Vessels not under command or restricted in their ability to manoeuvre)
- (Rule 27 (Vessels not under command or restricted in their ability to manoeuvre))
- ... prescribed in subparagraphs (i) and (ii), the light, lights or shape prescribed in Rule 30. (c) A power-driven vessel engaged in a towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course shall, in addition to the lights and shapes prescribed in Rule 24 (a), exhibit the lights or shapes prescribed in subparagraphs (b)(i) and (ii) of this Rule. (d) A vessel engaged in dredging or underwater operations, when restricted in her ability to manoeuvre, shall exhibit the lights and shapes prescribed in subparagraph(b)(i), (ii) and (iii) of this Rule and shall in addition, when an obstruction exists, exhibit: (i) two all-round red lights or two balls in a vertical line to indicate the side on which the obstruction exists; (ii) two all-round green lights or two diamonds in a vertical line to indicate the side on which another vessel may pass; (iii) when at anchor, the lights or shapes prescribed in this paragraph instead ...
- 28. Rule 24 (<span class="highlight">Towing</span> and pushing)
- (Rule 24 (Towing and pushing))
- (a) A power-driven vessel when towing shall exhibit: (i) instead of the light prescribed in Rule 23 (a)(i) or (a)(ii), two masthead lights in a vertical line. When the length of the tow, measured from the stern of the towing vessel to the after end of the tow exceeds 200 m, three such lights in a vertical line; (ii) sidelights; (iii) a sternlight; (iv) a towing light in a vertical line above the sternlight; (v) when the length of the tow exceeds 200 m, a diamond shape where it can best be seen. (b) When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit they shall be regarded as a power-driven vessel and exhibit the lights prescribed in Rule 23. (c) A power-driven vessel when pushing ahead or towing alongside, except in the case of a composite unit, shall exhibit: (i) instead of the light prescribed in Rule 23 (a)(i) or (a)(ii), two masthead lights in a vertical line; (ii) sidelights; (iii) a sternlight. (d) A power-driven ...
- 29. Rule 22 (Visibility of lights)
- (Rule 22 (Visibility of lights))
- The lights prescribed in these Rules shall have an intensity as specified in section 8 of Annex I to these Regulations so as to be visible at the following minimum ranges: (a) In vessels of 50 m or more in length: - a masthead light, 6 miles; - a sidelight, 3 miles; - a sternlight, 3 miles; - a towing light, 3 miles; - a white, red, green or yellow all-round light, 3 miles. (b) In vessels of 12 m or more in length but less than than 50 m in length: - a masthead light, 5 miles; except that where the length of the vessel is less than 20 m, 3 miles; - a sidelight, 2 miles; - a sternlight, 2 miles; - a towing light, 2 miles; - a white, red, green or yellow all-round light, 2 miles. (c) In vessels of less than 12 m in length: - a masthead light, 2 miles; - a sidelight, 1 miles; - a sternlight, 2 miles; - a towing light, 2 miles; - a white, red, green or yellow all-round light, 2 miles. (d) In inconspicuous, partly submerged vessels or objects ...
- 30. Rule 21 (Definitions)
- (Rule 21 (Definitions))
- (a) "Masthead light" means a white light placed over the fore-and-aft centreline of the vessel showing an unbroken light over an arc of the horizon of 225° and so fixed as to show the light from right ahead to 22.5° abaft the beam on either side of the vessel. (b) "Sidelights" means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5° and so fixed as to show the light from right ahead to 22.5° abaft the beam on its respective side. In a vessel of less than 20 m in length the sidelights may be combined in one lantern carried on the fore-and-aft centreline of the vessel. (c) "Sternlight" means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135° and so fixed as to show the light 67.5° from right aft on each side of the vessel. (d) "Towing light" means a yellow light having the same characteristics as the "sternlight" defined in paragraph (c) ...
- 31. Rule 3 (General definitions)
- (Rule 3 (General definitions))
- ... to keep out of the way of another vessel. (g) The term "vessel restricted in her ability to manoeuvre" means a vessel which from the nature of her work is restricted in her ability to manoeuvre as required by these Rules and is therefore unable to keep out of the way of another vessel. The term "vessels restricted in their ability to manoeuvre" shall include but not be limited to: (i) a vessel engaged in laying, servicing or picking up a navigation mark, submarine cable or pipeline; (ii) a vessel engaged in dredging, surveying or underwater operations; (iii) a vessel engaged in replenishment or transferring persons, provisions or cargo while underway; (iv) a vessel engaged in launching or recovery of aircraft; (v) a vessel engaged in mine clearance operations; (vi) a vessel engaged in a towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course. (h) The term "vessel constrained by her draught" means a power-driven ...
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