7 - Traffic rules at sea Flashcards by prion alpha

5 parts of the ROR

general rules
steering and sailing rules
lights and shapes
sounds and light signals
exemptions

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example of vessel restricted in ability to manoeuvre?

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

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

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

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what does “safe speed” mean?

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

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how does one approach a bend in a narrow channel

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

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who has right of way in a narrow channel

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

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how does one join a traffic separation scheme lane?

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

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how does one cross a TSS lane?

at right angle to it

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who has to give way in an overtaking scenario?

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

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who has to give way in a head on scenario?

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

sail boat

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

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

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

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what is the sequence of priority in vessel type

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

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

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

combined lantern on fore and aft centreline of vessel

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

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

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nav light for boat >50m

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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nav light for boat <50m

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

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nav light for boat <20m

1 white mast light ahead
combined side lights
1 stern light

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nav light for boat <12m

1 all round white light

combined side light

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nav light for <7m and <7 knot

1 all round white light

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nav light for air cushioned vessel

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

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

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

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

>50m, on starboard side

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?

head on boat >50m

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

port side, air cushioned vessel

what boats are allowed to have combined side lights?

<20m and <12m

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

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

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

F, can use one above

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

<12m use one all round white light and combined nav light | <7m/7kt use one all round white light only

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

<7m and <7knots

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

<50 need 2 separate side lights | <20m can use combined sidelights

lighting for vehicle engaged in towing (night) | >200m and <200m

>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

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

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

lighting for sailing vessel at night >20m

side light, separate stern lights (no masthead light)

lighting for sailing vessel at night <20m

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

day time signal for sailing vessel making way under motor

black triangle pointing downwards

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

vehicle engaged in towing >200m

what does a black diamond shape indicate?

vessel engaged in towing >200m

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

sailing vessel <20m on starboard side

how to identify a sailing vessel under motor power

black triangle pointing downwards

night lighting for vessel not under command

2 red vertical lights in a line

lighting for vessel not under command but underway

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

day time shape for vessel not under command

2 black balls in vertical

lighting for vessel restricted in ability to manoeuvre

red - white - red all round vertical lights

lighting for vessel restricted in ability to manoeuvre but underway

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

day time signage for vessel restricted in ability to manoeuvre

black color: ball - diamond - ball vertical line

lighting for vessel restricted in ability to manoeuvre but anchored

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

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

vessel not under command

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

not under command but under way

what does 2 black balls during day time indicate

vessel not under command

what does red-white-red in vertical indicate?

vessel restricted in ability to manoeuvre

what is the flag for vessel engaged in diving operations

white and blue flag (flag A)

night lighting for vessel engaged in diving

only display red-white-red in vertical stack

lighting for vessel involved in mineclearing (night and day)

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

night light for vessel constrained by draught

usual lighting + 3 red all round vertical lighting

day symbol for vessel constrained by draught

1 black cylinder

lighting for pilot vessel at anchor

anchoring lights | + one white and one red all round in vertical at masthead

lighting for pilot vessel underway

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

anchoring lights for vessel >50m

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

anchoring lights for vessel <50m

one all round white light at bow

anchoring day symbol

one black ball

anchoring light/symbol for vessel 7m

not required

lighting for vessel <50m aground

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

vessel aground by day symbol

3 black balls

lighting for vessel >50m aground

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

lighting for vessel <12m aground

not required

how long is the horn blast for prolonged blast

4-6 seconds

what is the horn signal to indicate altering course to starboard

one short blast

what is the horn signal to indicate altering course to port

2 short blasts

what is the horn signal to indicate astern propulsion

3 short blast

what does 5 short blasts indicate?

I don't understand

what does 3 short blasts indicate

astern propulsion

what does 1 short blast indicate

altering course to starboard

what does 2 short blasts indicate

altering course to port

what does 2 prolonged and 2 short blast indicate

I am intending to overtake on port side

what does 2 prolonged and 1 short blast indicate

I am intending to overtake on starboard side

how to indicate agreement with your sound signal

1 prolonged, 1 short, 1 prolonged, 1 short

how to indicate disagreement with your sound signal

5 short blasts

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?

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

sound signal when in restricted visibility?

1 prolonged blast every 2 minutes

what does 2 prolonged blasts every 2 minute indicate?

restricted visibility, vessel stopped and not making way

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

restricted visiblity, used by vessels - not under command - restricted in ability to manoeuvre - constrainted by draught - fishing vessel - sailing vessel - towing vessel

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

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

who uses 4 short blasts in restricted visibility:?

pilot vessel engaged in pilotage duty

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

<12m

what are 4 ways to show distress

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

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

vessel not under command

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

vessel constrainted by draught

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

red-white-red vertical stack all round light

what does one black cylinder indicate?

vessel constrained by draught

what does 3 black ball indicate?

vessel aground

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?

pilot vessel

7 - Traffic rules at sea Flashcards

(94 cards)