ilot vessels when engaged on their station on pilotage duty
shall not show the lights required for other vessels, but shall carry a
white light at the masthead, visible all around the horizon, and shall
also exhibit a flare-up light or flare-up lights at short intervals,
which shall never exceed fifteen minutes.

On the near approach of or to other vessels they shall have their side
lights lighted, ready for use, and shall flash or show them at short
intervals to indicate the direction in which they are heading; but the
green light shall not be shown on the port side nor the red light on the
starboard side.

A pilot vessel of such a class as to be obliged to go alongside of a
vessel to put a pilot on board may show the white light instead of
carrying it at the masthead, and may, instead of the colored lights
above mentioned, have at hand, ready for use, a lantern with a green
glass on the one side and a red glass on the other, to be used as
prescribed above.

Pilot vessels when not engaged on their station on pilotage duty shall
carry lights similar to those of other vessels of their tonnage.

ART. 9. Fishing vessels and fishing boats when under way and when not
required by this article to carry or show the lights therein named shall
carry or show the lights prescribed for vessels of their tonnage under
way.

(_a_) Vessels and boats when fishing with drift nets shall exhibit
two white lights from any part of the vessel where they can best be
seen. Such lights shall be placed so that the vertical distance between
them shall be not less than 6 feet and not more than 10 feet, and so
that the horizontal distance between them measured in a line with the
keel shall be not less than 5 feet and not more than 10 feet. The lower
of these two lights shall be the more forward, and both of them shall be
of such a character as to show all around the horizon and to be visible
at a distance of not less than 3 miles.

(_b_) Vessels when engaged in trawling, by which is meant the
dragging of an apparatus along the bottom of the sea--

First. If steam vessels, shall carry in the same position as the white
light mentioned in article 2 (_a_) a tricolored 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 either bow to 2 points abaft the