1. When, in the cases referred to in articles 3.20 and 3.23, by night, the anchors of vessels, assemblies of floating material or floating establishments are so placed that they, their cables or chains may be a danger to navigation, the “stationary vessel” light nearest to such anchors shall be replaced by two ordinary white lights visible from all directions, about 1 m one above the other.
2. The vessels, assemblies of floating material and floating establishments shall mark each of their anchors which might be a danger to navigation:
By night:
By a float with a radar reflector bearing an ordinary white light visible from all directions;
By day:
By a yellow float with a radar reflector.
3. When the cables or anchor chains of floating equipment may be a danger to navigation, they shall be marked:
By night:
By a float with a radar reflector bearing an ordinary white light visible from all directions;
By day:
By a yellow float with a radar reflector.