An ordinary white light visible from all directions and at a height of at least 3 m.
This light may be replaced by an ordinary white light at the bow and an ordinary white light at the stern, positioned at the same height on the fairway side and visible from all directions.
Only vessels stationary offshore, without direct or indirect access to the bank, a black ball in a suitable position forward and high enough to be visible from all directions
2. A convoy stationary offshore (without direct or indirect access to the shore) shall carry:
On each vessel of the formation an ordinary white light visible from all directions, in a suitable position and at a height of at least 4 m. The total number of lights marking the barges may be limited to four, provided that the outlines of the convoy are clearly marked;
A black ball on the leading vessel of the convoy or on the outermost vessels leading the convoy and on the pusher if applicable.
3. Small craft may carry, instead of the lights prescribed by night in paragraphs 1 above, an ordinary white light in a suitable position and high enough to be visible from all directions.
4. The marking prescribed in this article shall not be mandatory:
(a) When the vessel is stationary in a waterway on which navigation is temporarily impossible or prohibited;
(b) When the vessel is stationary alongside the bank and is sufficiently well lit from the bank;
(c) When the vessel is stationary outside the fairway in a clearly safe situation;
(d) For ships’ boats, if stationed in the vicinity of the vessel to which they belong.