Navigation lights lrg

Grunt Productions 2007

Navigational LightsPart C Rules 20-31

A brief by Lance Grindley


General

• Instruction in the various navigation light layouts that may be experienced.

• In all examples define what action you would take if the grey mast indicates your vessel’s bow, and the other vessel is on a steady bearing.


Rule 20 - Application


Rule 20 - Application

• Lights shall exhibited from sunset to sunrise, and no other lights shall be exhibited that may be confused with the defined lights.

• Navigation lights shall also be exhibited during periods of restricted visibility


Rule 21 - Definitions


Navigation Lights

1. Masthead light

2. Port side light

3. Starboard side light

4. Stern light

5. Towing light


Rule 22 - Visibility of Lights


Rule 22 - Visibility of Lights Masthead

light Sidelight Sternlight Towing light All round

red white, green or yellow light

Length 50 metres or more

6 miles 3 miles 3 miles 3 miles 3 miles

Length less than 50 but 12 metres or more

5 miles 2 miles 2 miles 2 miles 2 miles

Length less than 20 but 12 metres or more

3 miles 1 mile 2 miles 2 miles 2 miles

Length less than 12 metres

2 miles 1 mile 2 miles 2 miles 2 miles


Rule 23 - Power-driven Vessels Underway


Power driven vessel, less than 50m in length, underway and making way, seen from starboard


Power driven vessel probably greater than 50 meters in length, seen from ahead.


Power driven vessel probably greater than 50 meters in length, starboard side open


Power driven vessel maybe more than 50 meters in length, port side open


Power driven vessel maybe more than 50 meters in length, port side open


Submarine, underway and making way, seen from starboard (Yellow all round light 90 flashes per minute)


Submarine underway and making way, port side open

(Yellow all round light 90 flashes per minute)


Non displacement vessel making way, port side open

(Yellow all round light 120 flashes per minute)


Non displacement vessel possibly greater than 50 m in length, underway and making way, port side open (120 flashes per minute)


Rule 24 - Towing and Pushing


Towing vessel 50m or less, with length of tow 200m or less, seen from ahead. Tow too small to be seen from this aspect.


Tug with tow less than 200m, starboard side open


Vessel less than 50 meters in length engaged in towing, with length of tow less than 200 meters seen

from port


Vessel less than 50 meters in length engaged in towing, with length of tow less than 200 meters seen from port


Vessel engaged in towing less than 50m in length, with length of tow greater than 200m, starboard side

open


Vessel engaged in towing possibly greater than 50m in length, with length of tow less than 200m,

starboard side open


Tug with tow less than 200m, port side open


Vessel engaged in towing, with tow, seen from aft


Vessel engaged in towing, with tow, seen from aft


Tug with tow less than 200m, starboard side open,

pushing but not composite unit


Tug with tow exceeding 200 meters, starboard side

open, towing a log boom


Vessel engaged in towing, probably a log boom, seen from astern


Vessel engaged in towing possibly greater than 50m in length, with length of tow greater than 200m,

starboard side open


Vessel engaged in towing, seen from astern, and the tow seen from starboard


You could be in risk of collision, and in grave danger


Rule 25 - Sailing Vessels Underway and Vessels Under Oars


Sailing vessel, port side open, showing optional

lights


Sailing vessel seen from ahead


Sailing vessel less than 20 meters in length seen from ahead, with combined lantern at masthead


Sailing Vessel from astern


Sailing vessel with mast head lantern, seen from starboard


Rule 26 - Fishing Vessels


Fishing vessel engaged in fishing under 50 meters in length, starboard side open


Fishing vessel engaged in trawling, underway less than 50 meters in length, port side open


Fishing vessel less than 50m in length, engaged in fishing, seen from starboard


Fishing vessel engaged in fishing under 50 meters in length, port side open


Vessel engaged in trawling, underway maybe 50 meters or more than in length, seen from ahead


Vessel engaged in trawling, underway maybe 50 meters or more in length, port side open


Fishing vessel engaged in trawling, underway less than 50 meters in length, seen from ahead


Fishing vessel engaged in trawling, underway possibly greater than 50 meters in length, seen from ahead


Fishing vessel engaged in trawling, less than 50 meters in length, with outlying gear, starboard side

open


Vessel engaged in trawling, underway less than 50 meters in length, port side open, with gear out towards white light


Two fishing vessels engaged in fishing, one with outlying gear, seen from starboard side


Rule 27 - Vessels Not Under Command or Restricted in Their

Ability to Maneuver


Vessel not under command, underway


Vessel, not under command, underway and making way, seen from ahead


Vessel not under command, underway and making way, starboard side open


Vessel underway and making way, not under command, port side open.


Vessel probably over 50 meters in length, restricted

in ability to maneuver, starboard side open


Vessel engaged in towing, under 50 meters in length, restricted in ability to maneuver, starboard

side open, probably a log boom


Vessel engaged in towing less than 50m in length, with length of tow greater than 200m, restricted her

ability to maneuver starboard side open


Vessel restricted in her ability to maneuver, head on, with obstructions on her starboard side


Vessel restricted in her ability to maneuver, head on, with obstructions on her starboard side and

clear on her port side


Vessel restricted in her ability to maneuver, seen from astern, underway or at anchor, with obstruction on her port side


Minesweeping vessel, probably 50 meters or more in length, port side open


Two power driven vessels, probably greater than 50 meters in length, underway and making way, restricted in their ability to maneuver, seen from starboard - probably replenishing at sea


Rule 28 - Vessels Constrained by Their Draft


Power driven vessel maybe more than 50 meters in length, underway and making way, starboard side

open, constrained by her draft


Power driven vessel maybe more than 50 meters in length, port side open, constrained by her draft


Power driven vessel, seen from astern, constrained by her draft


Rule 29 - Pilot Vessels


Vessel on pilotage duty, seen from ahead


Vessel on pilotage duty, underway, starboard side open


Vessel on pilotage duty underway, and making way, seen from astern


Pilot vessel, port side open, alongside power driven vessel possibly greater than 50 meters in length,

both underway and making way


Rule 30 - Anchored Vessels and Vessels Aground


Vessel at anchor possibly greater than 50 meters in length, starboard side


Vessel at anchor, with decklights, or power driven vessel underway and making way, showing improper decklights


Vessel aground, seen from either end It could also be a vessel not under command seen from astern


Vessel aground, starboard side open


Vessel aground, port side


Rule 31 - Seaplanes


Seaplane, seen head on


Others


Power driven or sailing vessel underway from astern

Vessel less than 6 meters underway

Any masthead light just above horizon

Vessel being towed from astern (look for the tow)

Vessel at anchor 50 meters or less


Vessel in distress

Business

Navigation lights lrg