SHIPS' LIGHTS AND REGULATIONS 191
of not less than 1 sea mile on the approach of or to other
vessels.
(d) Vessels, when engaged in trawling, by which is meant
the dragging of an apparatus along the bottom of the sea—
1. If steam vessels, shall carry in tibe same position
as the white light mentioned in Article 2 (a), a tricoloured
lantern so constructed and fixed as to show a white
light from right ahead to 2 points on each bow, and
a green light and a red light over an arc of the horizon
from 2 points on each bow to 2 points abaft the beam
on the starboard and port sides respectively; and not
less than 6 nor more than 12 feet below the tricoloured
lantern a white light in a lantern, so constructed as to
show a clear, uniform and unbroken light all round the
horizon.
2. If sailing vessels, shall carry a white light in a
lantern, so constructed as to show a clear, uniform and
unbroken light all round the horizon, and shall also,
on the approach of or to other vessels, show, where it can
best be seen, a white flare-up light or torch in sufficient
time to prevent collision.
All lights mentioned in sub-division (d), I and 2, shall
be visible at a distance of at least 2 miles.
(e)* Oyster dredgers and other vessels fishing with dredge-
nets shall carry and show the same lights as trawlers.
(/) Fishing-vessels and fishing-boats may at any time use
a flare-up light in addition to the lights which they are
by this Article required to carry and show, and they may
also use working lights.
(g) Every fishing-vessel and every fishing-boat under 150
feet in length, when at anchor, shall exhibit a white
light visible all round the horizon at a distance of at least
1 mile.
Every fishing-vessel of 150 feet in length or upwards,
when at anchor, shall exhibit a white light visible all
round the horizon at a distance of at least 1 mile, and
shall exhibit a second light as provided for vessels of
such length Dy Article 13.