te light abaft the funnel or
aftermast for the vessel towed to steer by, but such light shall not be
visible forward of the beam.

ART. 4. (_a_) A vessel which from any accident is not under command
shall carry at the same height as a white light mentioned in article 2
(_a_), where they can best be seen, and if a steam vessel in lieu
of that light, two red lights in a vertical line one over the other, not
less than 6 feet apart, and of such a character as to be visible all
around the horizon at a distance of at least 2 miles; and shall by day
carry in a vertical line one over the other, not less than 6 feet apart,
where they can best be seen, two black balls or shapes each 2 feet in
diameter.

(_b_) A vessel employed in laying or in picking up a telegraph
cable shall carry in the same position as the white light mentioned in
article 2 (_a_), and if a steam vessel in lieu of that light, three
lights in a vertical line one over the other, not less than 6 feet
apart. The highest and lowest of these lights shall be red and the
middle light shall be white, and they shall be of such a character as to
be visible all around the horizon at a distance of at least 2 miles. By
day she shall carry in a vertical line one over the other, not less than
6 feet apart, where they can best be seen, three shapes not less than 2
feet in diameter, of which the highest and lowest shall be globular in
shape and red in color and the middle one diamond in shape and white.

(_c_) The vessels referred to in this article, when not making way
through the water, shall not carry the side lights, but when making way
shall carry them.

(_d_) The lights and shapes required to be shown by this article
are to be taken by other vessels as signals that the vessel showing them
is not under command and can not, therefore, get out of the way.

These signals are not signals of vessels in distress and requiring
assistance. Such signals are contained in article 31.

ART. 5. A sailing vessel under way and any vessel being towed shall
carry the same lights as are prescribed by article 2 for a steam vessel
under way, with the exception of the white lights mentioned therein,
which they shall never carry.

ART. 6. Whenever, as in the case of small vessels under way during bad
weather, the green and red side lights can not be fixed, these lights
shall be kept at hand, lighted and ready for u