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----------ABOUT THE VIDEO----------
This video was originally uploaded to our other channel, Casual Navigation, back in 2018.
This video is an "in depth" look at Rule 24 of the International Regulations for Preventing Collisions at Sea. Rule 24 continues the section looking at Light and Shapes of different vessels. This rule defines the lights and shapes that a vessel engaged in towing operations needs to exhibit.
----------RULE 24----------
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, measuring from the stern of the towing vessel to the after end of the tow exceeds 200 metres, 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 metres, 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 vessel to which paragraph (a) or (c) of this Rule applies shall also comply with Rule 23(a) (ii).
(e) A vessel or object being towed, other than those mentioned in paragraph (g) of this Rule, shall exhibit:
i. sidelights;
ii. a sternlight;
iii. when the length of the tow exceeds 200 metres, a diamond shape where it can best be seen.
(f) Provided that any number of vessels being towed alongside or pushed in a group shall be lighted as one vessel,
i. a vessel being pushed ahead, not being part of a composite unit, shall exhibit at the forward end sidelights;
ii. a vessel being towed alongside shall exhibit a sternlight and at the forward end, sidelights.
(g) An inconspicuous, partly submerged vessel or object, or combination of such vessels or objects being towed, shall exhibit:
i. if it is less than 25 metres in breadth, one all-round white light at or near the forward end and one at or near the after end except that dracones need not exhibit a light at or near the forward end;
ii. if it is 25 metres or more in breadth, two additional all-round white lights at or near the extremities of its breadth;
iii. if it exceeds 100 metres in length, additional all-round white lights between the lights prescribed in sub-paragraphs (i) and (ii) so that the distance between the lights shall not exceed 100 metres;
iv. a diamond shape at or near the aftermost extremity of the last vessel or object being towed and if the length of the tow exceeds 200 metres an additional diamond shape where it can best be seen and located as far forward as is practicable.
(h) Where from any sufficient cause it is impracticable for a vessel or object being towed to exhibit the lights or shapes prescribed in paragraph (e) or (g) of this Rule, all possible measures shall be taken to light the vessel or object towed or at least to indicate the presence of such vessel or object.
(i) Where from any sufficient cause it is impracticable for a vessel not normally engaged in towing operations to display the lights prescribed in paragraph (a) or (c) of this Rule, such vessel shall not be required to exhibit those lights when engaged in towing another vessel in distress or otherwise in need of assistance. All possible measures shall be taken to indicate the nature of the relationship between the towing vessel and the vessel being towed as authorized by Rule 36, in particular by illuminating the towline.
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