Colregs, Part C, Lights and Shapes Flashcards by lachlan inglis

Rule 20 Application

a) all weathers

b) sunrise to sunset
no other lights, except those that cannot be confused or impair/ interfere with lookout

c) Lights prescribed in this part, If carried, shall be exhibited in restricted vis as well as all other necessary circumstances

d) rules concerning shapes, by day

e) Lights specified shall comply with the provisions of Annex I

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Rule 21 Definitions, a)

White Masthead light- fore and aft centreline. Unbroken
arc of horizon of 225 degrees (right ahead- 22.5 degrees abaft the beam) either side

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Sidelight b)

Green STBD light, Red Port light
Unbroken arc over the horizon of 112.5 degrees, from right ahead to 22.5 degrees abaft the beam, on their respective side

< 20m, can have combined in one lantern, fore and aft centreline

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Sternlight c)

White light, as nearly as practicable at the stern

Unbroken arc over the horizon of 135 degrees

From dead astern, to 67.5 degrees on each side

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Towing light d)

Yellow light, same characteristics as a sternlight for each vessel

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All-round light e)

light showing unbroken arc over the horizon of 360 degrees

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Flashing light f)

light flashing at regular intervals of 120 flashes or more per minute

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Rule 22 visibility of lights
>50m

Intensity as specified in section 8 of Annex I: to be seen from ranges of:
>50m
Masthead: 6 miles
Sidelight: 3 miles
Sternlight: 3 miles
Towing light: 3 miles
All round light (WRGY): 3 miles

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Rule 22, Visibility of lights
12m or more but less than 50m

Masthead: 5 miles, except <20m, then 3 miles
Sidelight: 2 miles
Sternlight: 2 miles
Towing light: 2 miles
All round light (WRGY): 2 miles

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Rule 22: visibility of lights
<12m

Masthead: 2 miles
Sidelight: 1 mile
Sternlight: 2 miles
Towing light: 2 miles
All round light (WRGY): 2 miles

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Rule 22: visibility of lights
Inconspicuous or partly submerged object under tow

All round white light, 3 miles

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Rule 23, Power driven vessel underway
a) PDV underway

Masthead light forward

Second light, abeam or abaft the beam, higher than fwd light. <50m shall not be obliged

Sidelights

Sternlight

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Rule 23, Power driven vessel underway
b) Air cushion in non displacement mode:

same as PDV, (in addition, all round flashing yellow)

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Rule 23, Power driven vessel underway
c) WIG craft

only when taking off or landing, and in flight, high intensity all round flashing red. In addition to subparagraph (a) (PDV)

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Rule 23, Power driven vessel underway
d) <12m

MAY exhibit in lieu, one all round white light and side lights (no stern)

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Rule 23, Power driven vessel underway
d) ii <7m, <7 knots,

in lieu of (a)may show all round white light, and if practicable, sidelights

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Rule 23, Power driven vessel underway
Masthead or all round white light of PDV <12m

May be off centre provided side lights are on fore and aft centreline, in one lantern OR as nearly as practicable, on the same line as all-round or masthead light

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Rule 24 towing and pushing
PDV when towing shall exhibit:

Two masthead lights in a vertical line, Instead of 23(a)

When length of tow exceeds 200m, 3 such lights

Sidelights

Sternlight

Towing light vertical above stern light

When the length of tow exceeds 200m, a diamond shape where best be seen

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Rule 24 towing and pushing
Pushing vessel/vessel being pushed ahead, rigidly connected in a composite unit

Shall be regarded as ONE PDV and shall exhibit such lights as Rule 23

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Rule 24 towing and pushing
PDV pushing ahead or towing alongside, NOT as a composite unit

Two masthead lights in a vertical line

Sidelights

Sternlight… NO Towing light

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Rule 24 towing and pushing
PDV to which paragraph A or C of this rule complies shall:

ALSO comply with rule 23

Rule 24 towing and pushing
Vessel being towed, other than those mentioned in paragraph (g) of this rule shall exhibit:

Sidelight

Sternlight

When the length of tow exceeds 200m, a diamond shape where best be seen

Rule 24 towing and pushing
Provided that any number of vessels being towed alongside or pushed in a group shall be lighted as one vessel

a vessel being pushed ahead, not a composite:
shall exhibit only sidelights at the forward end

A vessel towed alongside shall exhibit:
Sternlight
Sidelights at the forward end

Rule 24 towing and pushing
Inconspicuous or partly submerged object being towed shall exhibit:

<25m in breadth, all round white at fwd and aft. Dracones need not show at fwd end

> 25m in breadth, two all round whites, at extremities

> 100m, more white lights, so the gap between does not exceed 100m

Diamond shape at aftermost extremity
If tow exceeds 200m, Additional diamond shape, where best be seen and far forward as possible

Rule 25, Sailing vessels and vessels under oars Sailing vessels shall exhibit:

Sidelights and stern light Sailing vessel (underway) may exhibit: two all round lights. Red over Green NOT IN CONJUNCTION ^^ Motor sailing: conical shape, apex downwards by day

Rule 25 Sailing vessels and vessels under oars: sailing less than 20m

MAY exhibit: Combined lantern near top of mast

Rule 25 Sailing vessels and vessels under oars: Sailing vessel (underway) may in addition exhibit

Two all round lights, at or near top of mast, where best be seen. Red over Green. Not in conjunction with light prescribed in subparagraph b) (combined lantern)

Rule 25 Sailing vessels and vessels under oars: Less than 7m and under oars

If not possible to show side and stern lights, shall have White hand torch ready in sufficient time

Rule 25 Sailing vessels and vessels under oars: Sailing vessel propelled by machinery

Conical shape forward, where best be seen, conical shape, apex downwards

Rule 26 Fishing Vessels

Underway or at anchor, ONLY the lights prescribed in this rule Definitely making way/not making way Cannot tell size of fishing vessel CAN tell size of Trawling vessel

Rule 26 Fishing Vessels Trawling vessels

Dragging through the water of a dredge net or other apparatus used as a fishing appliance: Green over White, all round Conical shapes, apexes pointing towards each other in a vertical line >50m, masthead light abaft and higher than all round green When making way, sidelights and sternlight

Rule 26 Fishing Vessels Fishing other than trawling

All round lights, red over white Two cones, apexes pointing towards each other in a vertical line Outlying gear more than 150m (horizontally) White light in direction of gear or Cone, apex upwards in direction of gear When making way: sidelights and sternlight

Rule 26 Fishing Vessels Vessels in close proximity :

Additional signals as seen in Annex II

Rule 26 Fishing Vessels When not engaged in fishing shall exhibit:

Lights and shapes prescribed for a vessel of her length (PDV)

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: NUC

Definitely or Definitely not making way Can't tell length Two all round red lights, vertical line where best be seen Two balls in a vertical line where best be seen WHEN MAKING WAY, sidelights and sternlight

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: RAM, except mine clearance

Impossible to tell length of a RAM vessel unless underway 3 all round, red white red, where best be seen Ball diamond ball, where best be seen When making way: Masthead light/s, sidelights and stern, in addition to: ^^ When at anchor: lights or shapes prescribed in rule 30 (Anchor lights/shapes as normal)

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: PDV engaged in towing such as severely restricts her ability to deviate from her course

Ball diamond ball Red white red In addition to PDV Towing lights Possibly making way

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: Engaged in dredging or underwater operations shall exhibit:

Lights and shapes prescribed in b) of this rule, in addition: Two all round red lights/two balls on obstructed side Two all round green lights/two diamonds on side clear to pass When at anchor, shall exhibit THESE lights, not anchor lights as in rule 30 Therefore: if no nav lights, she could be underway floating, or at anchor!

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: Diving operations, when impracticable to exhibit Underwater operations lights shall exhibit:

Three all round light, Red White Red + Rigid replica of Morse flag Alpha not less than 1m in height, measures taken to ensure all round visibility

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: Mine clearance operations

In addition to PDV lights. 3 green lights black balls: one near the foremast head and one on each end of the fore yard These lights indicate it is dangerous to enter within 1000m of this vessel stop vessel, call master, call on radio

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: vessels less than 12m

Less than 12m need not exhibit lights as prescribed in this rule, except when engaged in diving operations

Rule 27 Vessels not under command or restricted in their ability to manoeuvre: These lights in this rule are not:

These are not signals of distress or requiring assistance

Rule 28, Vessels constrained by their draft:

In addition to lights for a PDV, show 3 all round red lights, where best be seen Or A black cylinder by day

Rule 29 Pilot Vessels

Engaged in pilotage duty shall exhibit: White over red (all round), at or near mast head Underway, Sidelights and stern light can not tell the size of a pilot vessel on duty, UNLESS at anchor At anchor, lights prescribed under rule 30 Not engaged in pilotage duty, lights and shapes for a vessel of similar length

Rule 30 anchored vessels and vessels aground: Vessel at anchor shall exhibit

At anchor, where best be seen: In fore part, all round white light or one ball by day At or near stern, and a lower level, all round white light

Rule 30 anchored vessels and vessels aground: Vessel <50m at anchor

One White anchor light may be where best be seen, BALL IS STILL FWD

Rule 30 anchored vessels and vessels aground: Vessel >100m at anchor

Any vessel, may illuminate decks. >100m, SHALL illuminate her decks

Rule 30 anchored vessels and vessels aground: Aground

In addition to anchor lights, two all round red, or 3 balls by day

Rule 30 anchored vessels and vessels aground: <7m at anchor, not in or near a narrow channel, fairway or anchorage, or area of normal navigation

Need not show anchor lights

Rule 30 anchored vessels and vessels aground: <12m, when aground

Need not show aground lights, shall still exhibit anchor lights

Rule 31 Seaplanes

If it is impractical for a seaplane to show the lights prescribed in the rules of this part, she shall exhibit lights and shapes as closely similar in characteristics and position as is possible Agreements must be approved by their government, as per rule 1(e)