(a)
General rule. The navigation lights requirements in this
section shall be complied with in all weather from sunset to sunrise on the
waters of this Commonwealth. During these times other lights may not be
exhibited, except lights that cannot be mistaken for the lights specified in
this section, lights that do not impair their visibility or distinctive
character, or interfere with the keeping of a proper lookout. The lights
prescribed in this section must, if carried, be exhibited from sunrise to
sunset in restricted visibility and may be exhibited in all other circumstances
when it is deemed necessary. The lights specified in this section must comply
with United States Coast Guard specifications.
(b) Definitions. The
following words and terms, when used in this section, have the following
meanings, unless the context clearly indicates otherwise:
All-round light-A light showing an
unbroken light over an arc of the horizon of 360°.
Docking light-A flood or spotlight type of
light permanently installed or permanently mounted on a motorboat that is used
to illuminate a boat's forward course of travel.
Flashing light-A light flashing at regular
intervals at a frequency of 120 flashes or more per minute.
Masthead light-A white light placed over
the fore and aft centerline of the boat showing an unbroken light over an arc
of the horizon of 225° and fixed as to show the light from right ahead to
22.5° abaft the beam on either side of the boat, except that on a boat of
less than 39.4 feet (12 meters) in length, the masthead light must be placed as
nearly as practicable to the fore and aft centerline of the boat.
Restricted visibility-A condition in
which visibility is restricted by fog, mist, falling snow, heavy rainstorms,
sandstorms or other similar causes.
Sailboat-A boat under sail provided that
propelling machinery, if fitted, is not being used.
Sidelights-A green light on the starboard
(right) side and a red light on the port (left) side, each showing an unbroken
light over an arc of the horizon of 112.5° and fixed as to show the light
from right ahead to 22.5° abaft the beam on its respective side. On a boat
of less than 65.6 feet (20 meters) in length, the side lights may be combined
in one lantern carried on the fore and aft centerline of the boat. On a boat of
less than 39.4 feet (12 meters) in length, the sidelights when combined in one
lantern must be placed as nearly as practicable to the fore and aft centerline
of the boat.
Special flashing light-A yellow light
flashing at regular intervals at a frequency of 50 to 70 flashes per minute,
placed as far forward and as nearly as practicable on the fore and aft
centerline of the tow and showing an unbroken light over an arc of the horizon
of not less than 180° nor more than 225° and fixed as to show the light
from right ahead to abeam and no more than 22.5° abaft the beam on either
side of the boat.
Sternlight-A white light placed as nearly
as practicable at the stern showing an unbroken light over an arc of the
horizon of 135° and fixed as to show the light 67.5° from right aft on
each side of the boat.
Underway-A boat that is not at anchor,
made fast to the shore or aground.
(c)
Visibility of
lights.-The lights prescribed in this section must have an intensity
as specified by the United States Coast Guard so as to be visible at the
following minimum ranges:
(1) In a boat of 164
feet (50 meters) or more in length: a masthead light, 6 miles; a sidelight, 3
miles; a sternlight, 3 miles; a towing light, 3 miles; a white, red, green or
yellow all-round light, 3 miles; and a special flashing light, 2
miles.
(2) In a boat of 39.4 feet
(12 meters) or more in length but less than 164 feet (50 meters) in length: a
masthead light, 5 miles; except that when the length of the boat is less than
65.6 feet (20 meters), 3 miles; a sidelight, 2 miles; a sternlight, 2 miles; a
towing light, 2 miles; a white, red, green or yellow all-round light, 2 miles;
and a special flashing light, 2 miles.
(3) In a boat of less than 39.4 feet (12
meters) in length: a masthead light, 2 miles; a sidelight, 1 mile; a
sternlight, 2 miles; a towing light, 2 miles; a white, red, green or yellow
all-round light, 2 miles; and a special flashing light, 2 miles.
(4) In an inconspicuous, partly submerged
boat or object being towed: a white all-round light, 3 miles.
(d)
Motorboats
underway.
(1) A motorboat underway
must exhibit the following lights:
(i) A
masthead light forward.
(ii) A
second masthead light abaft of and higher than the forward one. A boat of less
than 164 feet (50 meters) in length may exhibit this light.
(iii) Sidelights.
(iv) A sternlight.
(2) An air-cushion boat when operating in the
nondisplacement mode must, in addition to the lights prescribed in paragraph
(1), exhibit an all-round flashing yellow light where it can best be seen.
(3) A motorboat of less than 39.4
feet (12 meters) in length may, instead of the lights prescribed in paragraph
(1), exhibit an all-round white light and sidelights.
(e)
Sailboats underway and unpowered
boats.
(1) A sailboat underway must
exhibit the following lights:
(i)
Sidelights.
(ii) A
sternlight.
(2) In a
sailboat of less than 65.6 feet (20 meters) in length, the lights prescribed in
paragraph (1) may be combined in one lantern carried at or near the top of the
mast where it can best be seen.
(3)
A sailboat underway may, in addition to the lights prescribed in paragraph (1),
exhibit at or near the top of the mast, where they can best be seen, two
all-round lights in a vertical line, the upper being red and the lower green.
These lights may not be exhibited in conjunction with the combined lantern
permitted by paragraph (2).
(4) A
sailboat of less than 23 feet (7 meters) in length must, if practicable,
exhibit the lights prescribed in paragraph (1) or (2). If these lights are not
exhibited, the sailboat must have ready at hand an electric torch or lighted
lantern showing a white light that must be exhibited in sufficient time to
prevent collision.
(5) An unpowered
boat may exhibit the lights prescribed in this subsection for sailboats. If
these lights are not exhibited, the unpowered boat must have ready at hand an
electric torch or lighted lantern showing a white light that must be exhibited
in sufficient time to prevent collision.
(f)
Anchored boats and boats
aground.
(1) A boat at anchor must
exhibit an all-round white light where it can best be seen:
(i) In the fore part.
(ii) At or near the stern and at a lower
level than the light prescribed in subparagraph (i).
(2) A boat of less than 164 feet (50 meters)
in length may exhibit an all-round white light where it can best be seen
instead of the lights prescribed in paragraph (1).
(3) A boat aground must exhibit the lights
prescribed in paragraph (1) where they can best be seen.
(4) A boat of less than 65.6 feet (20 meters)
in length, when at anchor in a special anchorage area designated by the United
States Coast Guard, is not required to exhibit the anchor lights and shapes
required under this subsection.
(g)
Boats being towed. When,
for any sufficient cause, it is impracticable for a boat or object being towed
to exhibit the lights prescribed in this section, all possible measures shall
be taken to light the boat or object towed or at least to indicate the presence
of the unlighted boat or object.
(h)
Docking lights. It is
unlawful for a boat operator to use docking lights while underway except when
docking and the boat is traveling at slow, no wake speed and is within 100 feet
of approaching a dock, a mooring buoy or the shoreline.
