Figure 9-22.—Pilot vessel, under way.
an all-round white light at a level lower than the light
in the forepart of the vessel. Rule 30 applies here.
NOTE
A vessel less that 50 meters may substi-
tute one white light where best seen. A vessel
100 meters or greater is required to illuminate
its decks.
Towing Vessels
There are various light signals for towing (fig.
9-24). We will discuss a few in the following
paragraphs.
LESS THAN 50 METERS.—A power-driven
vessel less than 50 meters that is towing astern and the
length of the tow does not exceed 200 meters is
required to display two masthead lights, sidelights,
and a yellow-over-white sternlight.
GREATER THAN 50 METERS.—A power-
driven vessel greater than 50 meters that is towing
astern and the length of tow does not exceed 200
meters is required to display two masthead lights, an
after masthead light, sidelights, and a yellow-over-
white sternlight.
LESS THAN 50 METERS, TOW EXCEEDS
200 METERS.—A vessel less than 50 meters that is
towing astern with the length of tow exceeding 200
meters must display three masthead lights, sidelights,
and a yellow-over-white sternlight. The dayshape
display will be a DIAMOND.
TOWING, RESTRICTED MOVEMENT.—A
vessel unable to deviate from its course and the length
of tow does not exceed 200 meters is to display two
masthead lights, sidelights, a yellow-over-white
sternlight, and the light signal RED-WHITE-RED.
The dayshape display will be BALL-DIAMOND-
BALL and a DIAMOND.
When the length of tow exceeds 200 meters, the
vessel is to display three masthead lights, sidelights, a
yellow-over-white sternlight, and the light signal
RED-WHITE-RED. The dayshape display will be the
same as above. Rule 24 applies here.
Not-Under-Command Lights
A vessel not under command (fig. 9-25) should
display the following lights: RED-RED displayed
vertically, sidelights, and a sternlight. The sidelights
and sternlight are only displayed when making way
through the water. The dayshape signal for a vessel not
under command is two black balls displayed
vertically. Rule 27 applies here.
9-23
