Lights and Shapes

Question 1

visibility of lights vessels >50m

Answer 1

Masthead Light 6 miles
Sidelight 3 miles
Sternlight 3 miles
Towing Light 3 miles
White, Red, Green all round Light 3 miles

Question 2

Visibility of lights vessels greater than 12m less then 50m

Answer 2

Masthead Light 5 miles <20m 3 miles
Sidelight 2 miles
Sternlight 2 miles
Towing Light 2 miles
White, Red, Green all round Light 2 miles

Question 3

Visibility of lights vessels less than 12m

Answer 3

Masthead Light 2 miles
Sidelight 1 mile
Sternlight 2 miles
Towing light 2 miles
White, Red, Green all round Light 2 miles

Question 4

PDV Underway

Answer 4

Masthead Light forward
Second Masthead Light Abaft and Higher than the forward one >50m
Sidelights
Sternlight

Question 5

Air cushion vessel

Answer 5

In addition to the lights for a PDV Underway
also shall exhibit an all round flashing yellow light

Question 6

WIG

Answer 6

when taking off, landing and in flight near the surface in addition to the lights for a PDV Underway a high intensity all round flashing red light

Question 7

PDV <12m

Answer 7

All round white light
sidelights

Question 8

PDV <7m <7knots

Answer 8

All round white light
Sidelights if practiable

Question 9

Masthead Light or All round white Light on PDV <12m

Answer 9

may be displaced from the fore and aft centreline of the vessel if centreline fitting is not practicable. provided that the side lights are combined in a lantern which shall be carried in one lantern which shall be on the fore and aft centreline or located as nearly as practicable in the same fore and aft line as the masthead light or the all round white light

Question 10

Towing Vessel

Answer 10

Two masthead lights in a vertical line
when length of tow exceeds 200m three masthead lights in a vertical line
side lights
sternlight
towing light in a vertical line above the sternlight same as sternlight visability
Day shape if tenth of tow exceeds 200m a diamond shape where it can best be seen

Question 11

Pushing Rigidly Connected in a composite unit

Answer 11

they shall be regarded as one power driven vessel

Question 12

PDV when pushing ahead to towing alongside except in the case of a composite unit

Answer 12

two masthead lights in a vertical line
sidelights
stern light

Question 13

Vessel or object being towed

Answer 13

sidelights
sternlight
when length of tow exceeds 200m a diamond shape where it can best be seen

Question 14

Vessel being pushed ahead not part of a composite unit

Answer 14

exhibit at the forward end sidelights

Question 15

Vessel being towed alongside

Answer 15

sternlight and at forward end sidelights

Question 16

An inconspicuous, party submerged vessel or object <25m breadth

Answer 16

one all round white light at or near the forward end and one at or near the end

Question 17

An inconspicuous, party submerged vessel or object >25m breadth

Answer 17

one all round white light at or near the forward end and one at or near the end
two additional all round white lights at or near the extremities of its breadth

Question 18

An inconspicuous, party submerged vessel or object >100m

Answer 18

one all round white light at or near the forward end and one at or near the end
an additional all round white light between these lights so that the distance between the lights don’t exceed 100m

Question 19

Sailing Vessels Underway

Answer 19

Sidelights
Sternlight

Question 20

Sailing vessels >20m Underway

Answer 20

may combine the lights for a sailing vessel >20m one lantern carried at or near the top of the mast where it can best be seen

Question 21

sailing vessel day shapes

Answer 21

if being propelled by machinery she shall exhibit forward where it can best be seen a conical shape apex pointing downwards

Question 22

Fishing Vessel engaged in trawling whether underway or at anchor

Answer 22

trawling - dragging through the water of a dredge net

two all round lights in a vertical line the upper being red and lower being white
Day shape - a shape consisting of two cones with their apexes in a vertical line one above the other

when making way through the water
sidelights
sternlight

Question 23

Fishing Vessel engaged in trawling whether underway or at anchor >50m

Answer 23

two all round lights in a vertical line the upper being red and lower being white
Day shape - a shape consisting of two cones with their apexes in a vertical line one above the other
also a masthead light abaft and higher that the all round green light

when making way through the water
sidelights
sternlight

Question 24

fishing vessel engaged in trawling >20m shooting nets

Answer 24

in addition to the lights for this vessel two all round white lights in a vertical line

Question 25

fishing vessel engaged in trawling >20m Hauling nets

Answer 25

in addition to the lights for this vessel one white light over one red light in a vertical line

Question 26

fishing vessel engaged in trawling >20m Fast on obstruction

Answer 26

in addition to the lights for this vessel two red lights in a vertical line

Question 27

Fishing vessel not engaged in trawling

Answer 27

Two all round lights in a vertical line the upper being red and lower being white Day shape - two cones with apexes together in a vertical line one above the other when there is gear extending more than 150m horizontally from the vessel an all round white light or a cone apex upwards in the direction of the gear when making way through the water sidelights sternlight when not engaged in fishing she shall not exhibit the lights of shapes prescribed in this rule.

Question 28

Not Under Command

Answer 28

two all round red lights in a vertical line where they can best be seen day shape two balls or similar shapes in a vertical line where they can best be seen when making way sidelights sternlight

Question 29

Restricted in ability to manoeuvre

Answer 29

three all round lights in a vertical line where they can best be seen red white red day shape three shapes in a vertical line where they can best be seen ball diamond ball when making way sidelights sternlight

Question 30

Restricted in ability to manoeuvre engaged in dredging or Underwater operations

Answer 30

two all round red lights or two balls in a vertical line to indicate the side on which the obsruction exists two all round green lights or two diamonds in a vertical line to indicate the side on which the other vessel may pass

Question 31

Mine Clearing Operations

Answer 31

three all round green light or three balls one of these lights or shapes shall be exhibited near the foremast head and one at each end of the fore yard these lights indicate that it is dangerous for another vessel to approach within 1000m

Question 32

Constrained by draught

Answer 32

three all round red lights in a vertical line day shape - cylinder

Question 33

pilot vessel engaged in pilot duty

Answer 33

two all round lights in a vertical line white over red when underway sidelights stern light

Question 34

vessels at anchor

Answer 34

in the fore part an all round white light at or near the stern and at a lower level that the fore light an all round white light for vessels over 50m when over 100m she shall use her deck lights to illuminate their deck

Question 35

vessel aground

Answer 35

two al round red lights in a vertical line three balls in a vertical line in addition to anchor lights