IRPCS Flashcards
Vessels within sight of one another - sailing vessels
Rule 12
Vessels within sight of one another - Overtaking situation
Rule 13
Vessels within sight of one another - Power driven vessels head on
Rule 14
Vessels within sight of one another - Crossing
Rule 15
Vessels within sight of one another - when a vessel is give way, how should alterations be made?
Take early and substantial action to keep well clear, positive alteration of course such as it is obvious to the other vessel that action has been taken
Where doubt exists as to the risk of collision, what should the vessel do?
Rule 7 - such risk shall be deemed to exist.
How can risk of collision be established by a vessel not in sight of an approaching vessel?
Radar, sound signals
How can risk of collision be established by a vessel when in sight of one another?
Taking a bearing - closing bearing would mean a risk exists.
What are the lights and shapes for a towing vessel?
If the tow is over 200m - diamonds by day, 3 masthead lights, yellow light above stern light, side lights and stern lights on towed vessel.
What are the lights and shapes for sailing vessels?
Less than 20m - Tricolour, or bi colour and stern light at deck height.
Greater than 20m - separate side lights and stern light at deck level.
Option extra - red over green.
Day shape when motor sailing - motoring cone
At night when motoring - steaming light and stern light - not masthead tricolour
What are the lights and day shapes for fishing vessels?
Day shape is two cones together - like west cardinal
Trawling - by night side lights, green over white all around
Fishing - by night side lights, red over white - all around
Second light to indicate outlaying gear and which direction
always size unknown
What are the lights and shapes for a vessel NUC?
Will not display PDV making way lights
Will display side lights and stern light
Day shape is two balls in a column
Night two red lights - red over red, captains dead
What are the day shapes and lights for a vessel that is RAM?
Day shape is ball diamond ball
Night light is red/white/red
On side with outlaying gear by day - balls on side of outlaying gear, diamonds on side that is clear to pass
By night, two reds on side with gear, greens on side clear to pass
What are the day shapes and lights for a mine clearing vessel?
By day, three balls - two on bottom and one on top
By night - three green lights - same as day shape
What are the day shapes and lights for a diving vessel?
By day they display alpha flag - white and blue
By night displays as RMA
What day shapes and lights will a vessel constrained by draft display?
By day, display a cylinder
By night, three red lights in a column
What day shapes and lights will a pilot vessel display?
By day pilot flags - red and white striped
By night white over red
What day shapes and lights will a vessel at anchor display?
Dy day, single ball
By night, single white light, or if over 50m at anchor, forward light higher than aft light and no side lights
What day shapes and lights will a vessel aground display?
By day - three balls
By night, NUC and anchor lights
No side lights
What sound signal would a vessel with engine running astern sound?
three short blasts
What sound signals would a vessel altering course to starboard sound?
One short blast
What sound signal would a vessel altering course to port sound?
Two short blasts
What signal would a vessel approaching a blind corner sound?
One long blast
What would 5 short blasts indicate?
What are your intentions, you are not taking enough avoiding action
What sound signal would a vessel intending to overtake to port sound?
Two long, two short
What sound signal would a vessel intending to overtake to starboard sound?
Two long, one short
What is the sound signal for a vessel to sound affirmative?
One long, one short, one long, one short
What signal would a vessel make if they do not agree to being overtaken?
Either silence or 5 short
What sound signal would a PDV making way make in restricted vis?
One long at intervals not exceeding 2 minutes
What sound signal would a PDV underway not making way make in restricted visibility?
Two long blasts at intervals not exceeding 2 minutes
What sound signals would all other vessels make in restricted visibility?
One long and two short at intervals not exceeding 2 minutes
What sound signal would a vessel greater than 100m make at anchor in restricted vis?
Bell rung at bow for 5 seconds, gong at stern for 5 seconds at intervals not exceeding 1 minute
Aiditional signal is Morse R - short, long, short
What signal would avessel less than 100m make at anchor?
Bell rung at boy for 5 seconds
What sound signal would a vessel between 12 and 20m make?
Other effivitent sound signal - Morse R at intervals not exceeding 2 minutes
What sound signal would a vessel less than 12 make at anchor?
Not required to comply, but if they do, Morse R at intervals not exceeding 2 minutes.
What sound signals would a vessel aground, greater than 100m make?
3 distinct strokes of a bell, bell rung for 5 seconds, 3 distinct strikes of a bell at the bow, then gong for 5 seconds at the stern
What sound signal would a vessel less than 100m make when a ground?
3 distinct strokes of a bell, bell rung for 5 seconds, 3 distancet strokes of a bell
