COLREGS PART C LIGHTS AND SHAPES Flashcards
When does Part C of Colregs apply and how does R20 apply?
Rule 20
- Applies in all weather
- Lights to be shown from sunset to sunrise
- no other lights shall be exhibited so as to not be mistaken/ interface with keeping a proper lookout
- Sunrise to sunset in RV and whenever deemed necessary.
- Shapes complied during the day
What are the Characteristics of lights under R21?
(a) “Masthead light” white light placed over the fore-and-aft centreline of the vessel showing an unbroken light over an arc of the horizon of 225° and so fixed as to show the light from right ahead to 22.5° abaft the beam on either side of the vessel.
(b) “Sidelights” green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5° and so fixed as to show the light from right ahead to 22.5° abaft the beam on its respective side. In a vessel of less than 20 m in length, the sidelights may be combined in one lantern carried on the fore-and-aft centreline of the vessel.
(c) “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 so fixed as to show the light 67.5° from right aft on each side of the vessel.
(d) “Towing light” a yellow light having the same characteristics as the “sternlight”.
(e) “All-round light” means a light showing an unbroken light over an arc of the horizon of 360°.
(f) “Flashing light” means a light flashing at regular intervals at a frequency of 120 or more flashes per min.
What is the Visibility of lights in R22?
(a) In vessels of 50 m 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.
(b) In vessels of 12 m or more in length but less than than 50 m in length:
- a masthead light, 5 miles; except that where the length of the vessel is less than 20 m, 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.
(c) In vessels of less than 12 m 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.
(d) In inconspicuous, partly submerged vessels or objects being towed:
- a white all-round light, 3 miles.
What lights should a PDV, Air-cushion vessel, and WIG display?
Power Driven Vessel:
- Masthead
- 2nd Masthead if more than 50m,
- Sidelights
- Sternlight
Power Driven Vessel less than 12m:
- All-round white light
- Sidelights
Power Driven Vessel less than 7m and speed does not exceed 7 knots:
- All-round white light
- Sidelights
Air-cushion vessel:
- Masthead
- 2nd Masthead if more than 50m,
- Sidelights
- Sternlight
- All-round flashing yellow light.
WIG Craft:
- Masthead
- 2nd Masthead if more than 50m,
- Sidelights
- Sternlight
- All-round flashing red light.
What are the Lights and Shapes for Towing and Pushing Vessels for:
1] PDV when towing and LOT less than 200m
2] PDV when towing and LOT more than 200m
1] PDV when towing and LOT less than 200m:
- 2 masthead lights in a vertical line
- Sidelights
- Sternlight
- Towing light in a vertical line above the stern light.
2] PDV when towing and LOT more than 200m:
- 3 masthead lights in a vertical line
- Sidelights
- Sternlight
- Towing light in a vertical line above the sternlight.
- A Diamond shape(DAY).
What are the Lights and Shapes for:
1] A PDV when pushing ahead or towing alongside
2] A vessel being towed
1] A PDV when pushing ahead or towing alongside:
- 2 masthead light in a vertical line
- Sidelights
- Sternlight
2] A vessel being towed
- Sidelights
- Sternlight
- A Diamond shape when LOT exceeds 200m.
What are the Lights and Shapes for:
1] A vessel being pushed ahead
2] A vessel being towed alongside
1] A vessel being pushed ahead:
- Sidelights at the front
2] A vessel being towed alongside:
- Sidelights at the front
- Sternlight
What are the Lights and Shapes for:
1] An inconspicuous, partly submerged object less than 25m in breadth.
2] An inconspicuous, partly submerged object more than 25m in breadth.
3]An inconspicuous, partly submerged object with length more than 100m.
1] An inconspicuous, partly submerged object less than 25m in breadth.
- 1 All-round white light forward and back.
2] An inconspicuous, partly submerged object more than 25m in breadth.
- 1 All-round white light forward and back.
- 2 all-round white lights near the extremities of its breadth.
3]An inconspicuous, partly submerged object with a length of more than 100m.
- 1 All-round white light forward and back.
- 2 all-round white lights near the extremities of its breadth.
- All-round white lights between lights above not exceeding 100m.
If the length of TOW exceeds 200m:
- Diamond Shape at or near the aftermost extremity of the last vessel or object being towed.
What are the Lights and Shapes for:
1] Sailing vessel underway
2] Sailing vessel less than 20m
3] Sailing vessel underway in addition
4] Sailing vessel less than 7m
5] A vessel under Oars
Day shape for vessel proceeding under sail and also propelled by machinery.
1] Sailing vessel underway
- Sidelights
- Sternlight
2] Sailing vessel less than 20m
- Combined in one lantern
3] Sailing vessel underway in addition
- Two all-round lights in a vertical line, RED over GREEN
- Sidelights
- Sternlight
4] Sailing vessel less than 7m
- electric torch or lighted lantern showing white light.
5] A vessel under Oars
- electric torch or lighted lantern showing white light.
Day Shape: Conical shape, apex downwards.
What are the Lights and Shapes for:
1] Vessels engaged in Trawling
2]Vessel engaged in fishing other than trawling.
1] Vessels engaged in Trawling
- 2 all-round lights in a vertical line, the upper being GREEN and the lower WHITE, or a shape consisting of two cones with their apexes together in a vertical line one above the other
- A masthead light abaft of and higher than the all-round green light; a vessel of less than 50 metres in length shall not be obliged to exhibit.
- When making way through the water, sidelights and a stern light.
2]Vessel engaged in fishing other than trawling.
- 2 all-round lights in a vertical line, the upper being RED and the lower WHITE, or a shape consisting of two cones with apexes together in a vertical line one above the other
- when there is outlying gear extending more than 150 meters horizontally from the vessel and an all-round WHITE light or a cone apex upwards in the direction of the gear
- When making way through the water, sidelights and a stern light.
What are the additional signals described in ANNEX 2?
(a) Vessels of 20 meters or more in length when engaged in trawling, whether using demersal or pelagic gear, shall exhibit:
(i) when shooting their nets:
two white lights in a vertical line; Zulu flag
(ii) when hauling their nets:
one white light over one red light in a vertical line; Golf flag
(iii) when the net has come fast upon an obstruction:
two red lights in a vertical line. Papa flag
(b) Each vessel of 20 meters or more in length engaged in pair trawling shall exhibit:
(i) by night, a searchlight directed forward and in the direction of the other vessel of the pair.
(ii) same prescribed lights when it comes to shooting, hauling and nets come fast upon on obstruction.
(c) A vessel less than 20m engaged in trawling, may exhibit the same prescribed lights.
Signals for purse seiners
- Exhibit two YELLOW lights in a vertical line.
- These lights shall flash alternately every second and with equal light and occultation duration.
- These lights may be exhibited only when the vessel is hampered by its fishing gear.
Lights and Shapes for:
1] NUC
2] RAM
3] PDV Vessel Towing severely restricted
A vessel not under command:
- two all-round RED lights in a vertical line where they can best be seen;
- two balls or similar shapes in a vertical line where they can best be seen;
- when making way through the water, sidelights and a sternlight.
A vessel restricted in her ability to manoeuvre:
- three all-round lights in a vertical line where they can best be seen. The highest and lowest of these lights shall be RED and the middle light shall be WHITE
- three shapes in a vertical line where they can best be seen. The highest and lowest of these shapes shall be BALLS and the middle one a DIAMOND
- when making way through the water, a masthead light or lights, sidelights and a sternlight
- when at anchor, RAM lights + ANCHOR lights.
PDV Vessel Towing severely restricted:
- Towing lights + RAM lights
Lights and Shapes for:
1] Dredging or Underwater ops
2] Vessel engaged in Diving ops
3] Vessel engaged in mine clearance operations
1] Dredging or Underwater ops:
- RAM lights + two all-round RED lights or two balls in a vertical line to indicate the side on which the obstruction exists;
- two all-round GREEN lights or two diamonds in a vertical line to indicate the side on which another vessel may pass;
2] Vessel engaged in Diving ops
- RAM Lights
- a rigid replica of the International Code flag “A” not less than 1 meter in height.
3] Vessel engaged in mine clearance operations
- PDV Lights+ exhibit three all-round GREEN lights or three balls. One of these lights or shapes shall be exhibited near the foremast head and one at each end of the foreyard.
- These lights or shapes indicate that it is dangerous for another vessel to approach within 1000 meters of the mine clearance vessel.
What are the Lights and Shapes for Vessels Constrained by their draught?
CBD:
- A masthead light
- Additional masthead light abaft and higher if vessel 50m and more in length
- Sidelights
- Stern light
- 3 All-round red lights in a vertical line
- DAY: Cylinder
What are the Lights and Shapes for Pilot Vessels?
A vessel engaged in Pilot Duty:
- 2 all-round lights in a vertical line, white over red
- Sidelight(IF UNDERWAY)
- Sternlight(IF UNDERWAY)
- At anchor: Pilot Lights + Anchor Lights
What are the Lights and Shapes for Vessel aground or anchored?
A vessel at Anchor:
- In the forepart, an all-round white light or one ball;
- At or near the stern and at a lower level, an all-round white light. (more than 50m in length)
- Vessel more than 100m in length may illuminate her decks.
A vessel Aground:
- Anchor lights + 2 all-round RED lights in a vertical line
- THREE balls in a vertical line.
A vessel less than 7m in length when at anchor not near the channel, fairway or anchorage do not need to exhibit Anchor lights.
A vessel less than 12m in length, when aground not required to exhibit Aground lights.
