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PPCDL Singapore > 7 - Traffic rules at sea > Flashcards

7 - Traffic rules at sea Flashcards

1
Q

5 parts of the ROR

A 
general rules
steering and sailing rules
lights and shapes
sounds and light signals
exemptions
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2
Q

example of vessel restricted in ability to manoeuvre?

A

vessel engaged in cable or pipe laying, dredging, surveying or underwater operations

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3
Q

what is excluded from the term “vessel engaged in fishing”

A

vessels fishing with trolling lines or other apparatus which does not restrict manoeuvrability

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4
Q

what does “safe speed” mean?

A

speed at which a vessel can take proper and effective action to avoid collision

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5
Q

how does one approach a bend in a narrow channel

A

keep to the starboard side of the channel, approach with one long blast on horn

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6
Q

who has right of way in a narrow channel

A

small boat (<20m) give way to big boat,

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7
Q

how does one join a traffic separation scheme lane?

A

at as small an angle as possible to the general direction of the traffic flow

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8
Q

how does one cross a TSS lane?

A

at right angle to it

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9
Q

who has to give way in an overtaking scenario?

A

overtaking boat has to give way, regardless of type of boat

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10
Q

who has to give way in a head on scenario?

A

both boats blast 1 short blast and alter course to starboard side I.e. pass the other ship on the port,

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11
Q

a sail boat and a power boat are approaching head on, who has right of way?

A

sail boat

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12
Q

2 power boats are approaching at 90 deg angle, who should give way? what should stand on boat do?

A

If boat A is approaching boat B, on boat A’s starboard, Boat A should give way and head to the stern of boat B I.e. if you see red, you give way.

stand on boat keeps course with caution - be ready to alter course to starboard if necessary, never alter to port

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13
Q

sail boat vs power boat at 90 deg angle, who has right of way?

A

sail boat is stand on boat (assuming making way under wind)

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14
Q

what is the sequence of priority in vessel type

A

1) vessel not under command
2) vessel restricted in ability to manoeuvre
3) vessel constrained by draught
4) vessel engaged in fishing
5) sailing vessel

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15
Q

what are the degree of angles and color required for a boats nav lights

A

masthead light - 225deg, white
side lights - 112.5, green for starboard, red for port
stern - 135, white

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16
Q

what is allowed for nav lights in a boat <20m

A

combined lantern on fore and aft centreline of vessel

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17
Q

Nav lights - 6 categories for lighting in power-driven vessel underway

A 
>50m
<50m
<20m
<12m
<7m and <7 knot
air cushioned vessel
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18
Q

nav light for boat >50m

A

2 white forward mast lights one in front one astern and higher
2 separate port/starboard lights
1 stern white light

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19
Q

nav light for boat <50m

A

1 white mast light ahead
2 separate sidelights
1 white stern light

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20
Q

nav light for boat <20m

A

1 white mast light ahead
combined side lights
1 stern light

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21
Q

nav light for boat <12m

A

1 all round white light

combined side light

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22
Q

nav light for <7m and <7 knot

A

1 all round white light

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23
Q

nav light for air cushioned vessel

A

1 white mast light ahead
2x separate side lights
1 stern light
1x all round flashing yellow light

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24
Q

you see a boat at night with 1 white light and 1 red light, what does this mean?

A

approaching the port side of a boat, <50m or <20m or <12m

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25
Q

you see a boat at night with 2 white lights apart from each other and 1 green light, what does this mean?

A

> 50m, on starboard side

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26
Q

you see a boat at night with 2 white lights one on top of each other and 1 green light and 1 red light, what does this mean?

A

head on boat >50m

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27
Q

you see a boat at night with one white light, one red light and one yellow flashing light, what does this mean?

A

port side, air cushioned vessel

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28
Q

what boats are allowed to have combined side lights?

A

<20m and <12m

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29
Q

what is the difference in lighting between a boat <20m and <12m

A

<20 needs one forward mast light and one stern light
<12 can use one all round white light
both use combined side light

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30
Q

you are allowed to use the nav lights of a boat one class below yours - T or F

A

F, can use one above

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31
Q

difference between nav lighting for boat <12m and <7m going <7 kts

A

<12m use one all round white light and combined nav light

<7m/7kt use one all round white light only

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32
Q

what does a boat underway displaying one all round white light indicate?

A

<7m and <7knots

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33
Q

difference in lighting between boat <50m and <20m

A

<50 need 2 separate side lights

<20m can use combined sidelights

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34
Q

lighting for vehicle engaged in towing (night)

>200m and <200m

A

> 200m: 3 white masthead lights in vertical stack, separate side lights, white stern light AND yellow towing light above stern light

<200m: 2 white masthead light in vertical stack, separate side lights, white stern light AND yellow towing light about stern light

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35
Q

signal for vehicle engaged in towing >200m during the day

A

towing vessel to display black diamond shape where it can best be seen

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36
Q

lighting for sailing vessel at night >20m

A

side light, separate stern lights (no masthead light)

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37
Q

lighting for sailing vessel at night <20m

A

combined lanterns at top of mast: all round red light, all round green light, and three-colored light below for sidelight and stern light. all in vertical stack

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38
Q

day time signal for sailing vessel making way under motor

A

black triangle pointing downwards

39
Q

at night you see a vessel with 3 vertical white lights and two separate side lights, what does this mean ?

A

vehicle engaged in towing >200m

40
Q

what does a black diamond shape indicate?

A

vessel engaged in towing >200m

41
Q

what does a vessel with 1 red , 1 green, and 1 green light in vertical stack indicate

A

sailing vessel <20m on starboard side

42
Q

how to identify a sailing vessel under motor power

A

black triangle pointing downwards

43
Q

night lighting for vessel not under command

A

2 red vertical lights in a line

44
Q

lighting for vessel not under command but underway

A

2 red vertical lights, separate sidelight, stern light (no mast light)

45
Q

day time shape for vessel not under command

A

2 black balls in vertical

46
Q

lighting for vessel restricted in ability to manoeuvre

A

red - white - red all round vertical lights

47
Q

lighting for vessel restricted in ability to manoeuvre but underway

A 
masthead lights (one lower at bow, one higher astern), separate side lights, stern lights 
AND red-white-red vertical all round lights
48
Q

day time signage for vessel restricted in ability to manoeuvre

A

black color: ball - diamond - ball vertical line

49
Q

lighting for vessel restricted in ability to manoeuvre but anchored

A

vertical red-white-red light + anchoring lights e.g. 2 all round white lights for >50m

50
Q

what does a vessel with 2 red vertical all round light indicate?

A

vessel not under command

51
Q

what does a vessel with 2 red vertical all round light indicate with side lights indicate?

A

not under command but under way

52
Q

what does 2 black balls during day time indicate

A

vessel not under command

53
Q

what does red-white-red in vertical indicate?

A

vessel restricted in ability to manoeuvre

54
Q

what is the flag for vessel engaged in diving operations

A

white and blue flag (flag A)

55
Q

night lighting for vessel engaged in diving

A

only display red-white-red in vertical stack

56
Q

lighting for vessel involved in mineclearing (night and day)

A

night: usual lights + 3 all round green lights in cross shape
day: 3 black balls in cross shape

57
Q

night light for vessel constrained by draught

A

usual lighting + 3 red all round vertical lighting

58
Q

day symbol for vessel constrained by draught

A

1 black cylinder

59
Q

lighting for pilot vessel at anchor

A

anchoring lights

+ one white and one red all round in vertical at masthead

60
Q

lighting for pilot vessel underway

A

one white and one red all round vertical light at/near masthead
+ separate side light + stern light

61
Q

anchoring lights for vessel >50m

A

one all white light at bower higher, one all white light at stern lower

62
Q

anchoring lights for vessel <50m

A

one all round white light at bow

63
Q

anchoring day symbol

A

one black ball

64
Q

anchoring light/symbol for vessel 7m

A

not required

65
Q

lighting for vessel <50m aground

A

all round white anchoring light + 2 red all around vertical light

66
Q

vessel aground by day symbol

A

3 black balls

67
Q

lighting for vessel >50m aground

A

anchoring light for >50m + 2 red vertical all round

68
Q

lighting for vessel <12m aground

A

not required

69
Q

how long is the horn blast for prolonged blast

A

4-6 seconds

70
Q

what is the horn signal to indicate altering course to starboard

A

one short blast

71
Q

what is the horn signal to indicate altering course to port

A

2 short blasts

72
Q

what is the horn signal to indicate astern propulsion

A

3 short blast

73
Q

what does 5 short blasts indicate?

A

I don’t understand

74
Q

what does 3 short blasts indicate

A

astern propulsion

75
Q

what does 1 short blast indicate

A

altering course to starboard

76
Q

what does 2 short blasts indicate

A

altering course to port

77
Q

what does 2 prolonged and 2 short blast indicate

A

I am intending to overtake on port side

78
Q

what does 2 prolonged and 1 short blast indicate

A

I am intending to overtake on starboard side

79
Q

how to indicate agreement with your sound signal

A

1 prolonged, 1 short, 1 prolonged, 1 short

80
Q

how to indicate disagreement with your sound signal

A

5 short blasts

81
Q

Boat A is behind Boat B. Boat A lets out 2 long and 2 short blasts, boat B lets out 5 short blasts, what does this mean?

A

Boat A signalled intention to overtake on port side, but Boat B disagreed

82
Q

sound signal when in restricted visibility?

A

1 prolonged blast every 2 minutes

83
Q

what does 2 prolonged blasts every 2 minute indicate?

A

restricted visibility, vessel stopped and not making way

84
Q

who and when is 1 prolonged and 2 short blasts used ?

A

restricted visiblity, used by vessels

  • not under command
  • restricted in ability to manoeuvre
  • constrainted by draught
  • fishing vessel
  • sailing vessel
  • towing vessel
85
Q

if a large boat is towing 3 smaller vessels behind, what is the appropriate sound signals to be made by all vessels?

A

large towing boat to signal 1 long and 2 short every 2 minutes

last towed vessel to signal 1 long and 3 short every 2 minutes

86
Q

who uses 4 short blasts in restricted visibility:?

A

pilot vessel engaged in pilotage duty

87
Q

what size boat and below is not required to make sound signals in restricted visibility?

A

<12m

88
Q

what are 4 ways to show distress

A

red hand flare
waving arms up and down
maydaymaydaymayday
SOS on morse code

89
Q

what does 2 red all round vertical light on a boat indicate?

A

vessel not under command

90
Q

what does 3 red all round vertical light on a boat indicate?

A

vessel constrainted by draught

91
Q

what is the lighting for vessel restricted in ability to manoeuvre?

A

red-white-red vertical stack all round light

92
Q

what does one black cylinder indicate?

A

vessel constrained by draught

93
Q

what does 3 black ball indicate?

A

vessel aground

94
Q

you see a boat with one all round white and one red all round light vertical stack, along with separate side light and stern light - what does this indicate?

A

pilot vessel

PPCDL Singapore (7 decks)

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