Colregs Part D, Sound and Light Signals

Question 1

Rule 32, Definitions:
What does the term Whistle mean?

Answer 1

Any sound signalling appliance capable of producing the prescribed blasts and which complies to the specifications in Annex III of these regulations

Question 2

Rule 32, Definitions:
How long is a short blast considered to be?

Answer 2

1 second

Question 3

Rule 32, Definitions:
How long is a prolonged blast considered to be?

Answer 3

4-6 seconds

Question 4

Rule 33 Equipment for sound signals
>12m

Answer 4

> 12m or more, Whistle

All shall comply with Annex III of these regulations

Question 5

Rule 33 Equipment for sound signals
>20m

Answer 5

> 20 or more, bell and whistle

Question 6

Rule 33 Equipment for sound signals
>100m

Answer 6

> 100m or more, bell, whistle, gong

Question 7

Rule 33 Equipment for sound signals
<12m

Answer 7

<12m in length shall not be obliged to carry under this rule, but must carry another form of sound signalling

Question 8

Rule 34 (a), when shall a power driven vessel use manoeuvring signals?

Answer 8

When in sight of one another

Question 9

Rule 34, manoeuvring signals
Light signals will be visible from what range:
What type of light will it be and it shall comply with which annex:

Answer 9

5 miles

All round white light
Annex I

Question 10

Rule 34, manoeuvring signals
c) overtaking in fairway/narrow channel

Answer 10

two prolonged one short, stbd
Two prolonged two short, port
Charlie, one prolonged one short, Affirmative

Question 11

Rule 34 (f), if whistles are spaced at distances on board more than 100m apart, may multiple whistles be used for manoeuvring?

Answer 11

No

Question 12

Rule 35, sound signals in restricted visibility
PDV making way through the water

Answer 12

1 prolonged blast, intervals of no more than 2 minutes

Question 13

Rule 35, sound signals in restricted visibility
PDV underway but stopped

Answer 13

2 prolonged blasts, intervals not exceeding 2 minutes

Question 14

Rule 35, sound signals in restricted visibility
NUC
RAM
CBD
SV
VEIF
TOWING/Pushing

Answer 14

Morse Delta, 1 prolonged, 2 short

Question 15

Rule 35, sound signals in restricted visibility
VEIF/RAM, at anchor, whilst carrying out work

Answer 15

Morse Delta 1 prolonged 2 short

Question 16

Rule 35, sound signals in restricted visibility
Vessel towed/more than one vessel towed, the last vessel in the tow:

Answer 16

Morse Bravo
1 prolonged, 3 short
Immediately after the towing vessel makes their signal

Question 17

Rule 35, sound signals in restricted visibility
Rigidly connected towing/pushing:

Answer 17

PDV, therefore same as subparagraph a) or b)

Question 18

Rule 35, sound signals in restricted visibility
Vessels at anchor <100m

> 100m

A vessel at anchor may also sound

Answer 18

ring bell rapidly for 5 seconds

Bell for 5 seconds in fore part, followed by gong in aft part for 5 seconds

one short, one prolonged, one short, to warn approaching vessels of her position

Question 19

Rule 35, sound signals in restricted visibility
Vessel aground
<100m
>100m

Answer 19

<100m, 3 strokes, rapid ringing, 3 strokes

> 100m, 3 strokes, rapid ringing, 3 strokes, rapid gong

A vessel aground may additionally sound an appropriate whistle signal

Question 20

Whistle signal/s for a vessel aground:

Answer 20

Lima *-** Stop immediately
Uniform **- You are running into danger

Question 21

Rule 35, sound signals in restricted visibility
12 or more but <20m is not obliged to make which fog signals?

Answer 21

Is not obliged to make anchor or aground signals, however, if she does not, she shall sound:

Any efficient sound, intervals no more than 2 minutes

Question 22

Rule 35, sound signals in restricted visibility
<12m

Answer 22

Not obliged to make sound signals prescribed in this rule, BUT
SHALL make some other efficient sound, intervals not exceeding 2 minutes

Question 23

Rule 35, sound signals in restricted visibility
Pilots vessels engaged in pilotage duty

Answer 23

Shall sound a), b) or g) MW/UW/Anchor

additionally, she may sound 4 short blasts

Question 24

Rule 36 Signals to attract attention

Answer 24

ANY vessel may make light or sound signals that:

Are not to be mistaken for those in these rules

She may direct her searchlight in the direction of danger, so as not to embarrass the other vessel

Nothing shall be mistaken for an AToN