(b) and (c) All vessels when engaged with drift-nets, or
employed in line-fishing with their lines out, shall exhibit
two white lights, placed so that the vertical distance
between them shall be not less than six feet and not more
than ten feet, and so that the horizontal distance between
them shall be not less than five feet and not more than
ten feet. The lower of these two lights shall be the more
forward, and both of them shall be of such a character,
and contained in lanterns of such construction, as to show
all round the horizon on a dark night, with a clear atmosphere,
for a distance of not more than three miles.
(d) If a vessel, when fishing, becomes stationary, in consequence of her gear getting fast to a rock or other obstruction, she shall show the light and make the fog-signal for a vessel at anchor.
(e) Fishing-vessels, when trawling, dredging, or fishing with any kind of drag-net, may use a flare-up in addition to the lights prescribed by this Article; the flare-up to be shown at the after-part of the vessel, excepting that, if the vessel be hanging by the stern to her trawl, dredge, or drag-net, it shall be exhibited from her bow.
(f) In fog, mist, or falling snow, a vessel engaged in fishing with trawl-nets, lines, etc., shall, at intervals of not more than two minutes, make a blast with her fog-horn and ring her bell alternately.
The following regulations were added by subsequent Orders in Council:—A British steam trawler of 20 tons register or upwards under steam, with trawl in the water, and not being stationary for reasons specified in subdivision (d), shall, between sunset and sunrise, either carry and show the lights required by Article 2, or shall carry and show in lieu thereof, but not in addition thereto, other lights of the description set forth below:—On or in front of the foremast head, and in the same position as the white light which other steamships are required to carry, a lanthorn showing a white light ahead, a green light on
