Navigation Lights and Shapes by maxj2012

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									Navigation Lights and Shapes
                            Navigation Rules COLREGS

The International Regulations for the Prevention of Collision at Sea (COLREGS)
apply to all vessels upon the high seas and vessels on most waterways, bays, inlets,
rivers connected to the sea.

Rule 3(a) defines 'Vessel' as all manner of watercraft used or capable of being used as
a means of transportation on water.

Rule 20 states that all vessels must display the proper lights from sunrise to sunset
and in situations where there is limited visibility.

Rule 21 Defines the various navigation lights - see below.




          Masthead Light

Rule 21(a) Masthead Light: The
'masthead light' is a white light
placed over the fore and aft
centerline of the vessel showing with
an arc of 225 degrees.




Sidelights

Rule 21(b) Sidelights: Sidelights are
red (port side) and green (starboard
side) lights than shine in an arc of
112.5 degrees from straight ahead to
a point 22.5 degrees abaft the beam.
             Stern Light

Rule 21(c) Stern Light: The stern
light is a white light placed as near as
is practicable at the stern. The light
shines in an arc of 135 degrees.




            Towing Light

Rule 21(d) Towing Light: The
towing light is a yellow light placed
as near as is practicable at the stern.
The light shine in an arc of 135
degrees.




           All-round Light

Rule 21(e) All-round Light: The
all-round light (such as the white
anchor light) shines in an arc of 360
degrees.
                         General Rules
At first glance the myriad of navigation lights and shapes don't seem to make much
sense. Here are a few basic rules to follow to make learning the navigation lights
easier.

      a vessel will only have red, green sidelights and a stern light when it is
       underway (i.e. not anchored, moored or secured to a dock);
      if a vessel is under power it will have one or two masthead lights depending on
       it's length (over 50 meters two; under 50 meters one). Since it is underway, it
       will also have the red, green sidelights and a stern light;
      a boat that is anchored, it is not making way and therefore it will only have one
       or more 360° white anchor lights depending on it's length ( under 50 meters -
       one anchor light; over 50 meters but under 100 meters - two anchor lights one
       at the bow and one at the stern; over 100 meters - two anchor lights, one at the
       bow and one at the stern plus deck lights). Any vessel anchored will display a
       black disc which is the day shape indicating the vessel is anchored;
      a sailboat (i.e. a boat under sail alone) will have red and green sidelights and a
       stern light but since it is not under power, it will not have a masthead light

In addition to the above, a vessel will have other lights and day shapes to characterize
the nature and activity of a boat. below.



 Navigation Lights for Sail Boats -
             Rule 25

Rule 3(c) Defines a "sailing vessel" as
any vessel under sail provided that
propelling machinery, if fitted, is not
being used.
Rule 25(a) Sailboats - Under Sail Only:
      Red and Green side lights;

      White Stern light.




Rule 25(b)Sailboats
- Optional Tri-color
Light:
Sailing vessels less than 20 meters in
length may use a combination mast
top tri-color light in place of the standard red and green sidelights and white stern
light.




Rule 25(c)Sailboats
- Optional Mast
Top Lights:
Not required by law, but to make
your sailboat more visible, you can
use the optionalRed over Green mast
top lights in addition to the required:
      Red and Green side lights;

      White Stern light.




Rule
25(d)(ii)Sailboats -
Less than 7 Meters:
A sailboat less than 7 meters is not
required to display lights as set out in
Rule 25(a) or (b) but must have ready
and at hand, an electric torch (flashlight) that shines a white light which shall be
exhibited in sufficient time to prevent a collison.

      White Stern light.




Rule 25(e)Sailboats
- Under Power
(Motorsailing):
A sailboat, either fully or partially
under power, for the purposes of the
Rules of Navigation, is treated as a
power driven vessel (powerboat). This means that if you are motorsailing, you are
now considered to be a powerboat and not a sailboat.
In addition to displaying the proper lights, a vessel under sail when also being
propelled by machinery shall display a conical shape, apex downwards. (Vessels
under 12 meters are not required to display this day shape.)



                            Navigation Lights for Power Boats




Rule 23(a)Power Boats underway - 50 Meters
and Over:
      Red and Green side lights;

      Two White Masthead lights (front lower);

      White Stern light.
Rule 23(b)Power Boats underway - less than
50 Meters:
      Red and Green side lights;

      White Masthead light;

      White Stern light.




Rule 23(d)(i)Power
Boats underway -
less than 12
Meters:
A power vessel less than 12 Meters in lieu of the lights prescribed in Rule 23(a) may
exhibit:

      Red and Green side lights;

      All-round White light.




Vessels Not In Command
A vessel 'Not in Command' is defined in Rule 3(f) as a vessel which is unable to
maneuver as required by these Rules and is therefore unable to keep out of the way of
other vessels.

A vessel is underway when it is not anchored, docked, secured to the shore or
aground.

Rule 27(a)(i)&(ii)
Vessel Not in
Command - Not
Making Way:
      Two all around Red lights,
       inline, one above the other;

      Shapes - two round discs,
       inline, one above the other.




Rule
27(a)(iii)Vessel Not
in Command -
Making Way:
      Two all around Red lights,
       inline, one above the other;

      Red and Green sidelights;

      Stern light.

      Shapes - two round discs, inline, one above the other.

Vessels at Anchor
There is no distinction between
power vessels at anchor and sailing
vessels at anchor.

Rule 30(b) Vessels
Under 50 Meters in
length:
      An all-round white light
       placed where it may best be
       seen.




Rule 30(a) Vessels
Over 50 Meters but
Under 100 Meters
in length:
      An all-round white light in the
       fore part or one ball;
      An all-round white light at or
       near the stern.
Rule 30(c) Vessels
Over 100 Meters in
length:
    An all-round white light in the
     fore part or one ball;
    An all-round white light at or
     near the stern;
    Use working or other lights to
     illuminate the decks.

								
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