Page 169 - Collision Avoidance Rules Guide

(iii) when the length of the tow exceeds 200 metres, a dia-
mond 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 com-
posite 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 com-
bination 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-para-
graphs (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 ves-
sel or object being towed to exhibit the lights or shapes pre-
scribed 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 by 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
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