Part C: Lights And Shapes

Question 1

When shall these light rules apply

Answer 1

In all weathers
From sunset to sunrise
In restricted visibility or when deemed necessary
Shapes complied with by day

Question 2

Masthead

Answer 2

White
Over fore and aft center line
Unbroken over 225 from ahead to 22.5 aback the beam

Question 3

Sidelights

Answer 3

Green Starboard
Red Port
Unbroken light 112.5 from ahead to 22.5 shaft the beam
Under 20m a combined lantern may be used

Question 4

Stern light

Answer 4

White as nearly as practically at the stern
Unbroken 135
67.5 from right aft on each side

Question 5

Towing light

Answer 5

Yellow same as stern

Question 6

All round light

Answer 6

Unbroken over arc of 360

Question 7

Flashing light

Answer 7

Light flashing at regular intervals of more than 120 per min

Question 8

Visibility of lights

Answer 8

63333
52222
32222
21222

Question 9

Air cushion lights

Answer 9

Yellow flashing

Question 10

WIG

Answer 10

Red flashing

Question 11

Where is second masthead in relation to the first for over 50m

Answer 11

Abaft and higher

Question 12

PDV less than 12m lights?

Answer 12

All round white instead of stern and masthead

Question 13

PDV less than 7m lights

Answer 13

Just all round white light

Question 14

Towing lights and day signs required

And submerged vessel

Answer 14

2 or 3 masthead lights
Towing light
Day sign black diamond only over 200m
Submerged 25m and 100m

Question 15

Sailing vessel lights

Day signal for sails up and power driven

Answer 15

Sidelights and sternlight
Red then green all round lights
Less than 20m combined lantern 
Less than 7m
Cone point down

Question 16

Fishing trawling and day sign
Shooting
Hauling
Net has been snagged

Answer 16

Green over white 
Hour glass
White over white
White over red
Red over red

Question 17

Fishing other than trawling

Day sign

Answer 17

Red over white
Outlying gear over 150m white on that side
Day sign same as trawling hour glass
And cone upwards for outlying gear over 150m

Question 18

Constrained by draught

Answer 18

3 red balls

Cylinder

Question 19

Pilot vessel

Answer 19

White over red

Question 20

At anchor

Dayshape

Answer 20

Bow light white
Stern light lower than bow for over 50m
Black ball at bow

Question 21

Aground

Answer 21

2 red lights
3 black balls
As well as anchor lights
Less than 7m no lights required
Less than 12m no lights required when aground

Question 22

Not under command

Answer 22

2 red lights
2 black balls
Stern light and sidelights

Question 23

RAM and dayshape

Answer 23

Red white red lights
Side stern and masthead lights or anchor
Ball diamond ball dayshape

Question 24

Dredging or underwater operations

Dayshape

Answer 24

2 x red or black balls on side of obstruction

2x green or diamond pass on this side

Question 25

Mine clearance and day shapes

Answer 25

3 green lights triangle
Or black balls
Dangerous within 100m