Navigational Rules of the Road Flashcards
To practice application of rules
The international rules of the road apply?
Upon the high seas and connecting waters navigable by seagoing vessels
An authorized light to assist in the identification of submarines operating on the surface is?
An intermittent flashing amber/yellow light
According to the rules, more than two vessels crossing would be?
A special circumstance
When may you depart from the rules?
When in immediate danger
In complying with the rules a mariner must take?
Due regard of the limiting backing power of his vessel, radar information about other vessels and the occupation of the other vessel if known
To be considered engaged in fishing a vessel must?
Be using fishing apparatus which restricts maneuverability
A vessel transferring cargo while underway is classified as?
A vessel restricted in her ability to maneuver
A vessel drifting with the engine off is considered?
To be underway
Are a pushing vessel and a vessel being pushed when connected in a composite unit regarded as restricted in her ability to maneuver?
No
When navigating in thick fog you should?
Station a look out as low down and far forward as possible
When does the rule regarding look outs apply?
Restricted visibility, between dusk and dawn and in heavy traffic
Safe Speed?
speed where you can take proper and effective action to avoid collision
When must you operate at a safe speed?
All times
What are some of the factors that are to be taken into account when determining safe speed?
Vessels detected by radar, wind, sea, current and proximity of navigational hazards
You are approaching another vessel and are not sure whether a danger of collision exists, according to the rules?
You must assume their is a risk of collision
Risk of collision exists when?
Approaching vessel has a generally steady bearing and decreasing range
The rules require that any action taken to avoid a collision must be?
Positive and made in ample time
When in sight of another vessel and there is sufficient sea room, any action taken to avoid collision must not result in?
Another close quarters situation
When action to avoid a close quarter situation is taken a course change alone may be the most effective action provided that?
It is a large course change
A vessel proceeding along a narrow channel shall…?
Keep as near as safe and practicable to the limit of the channel on her starboard side
In narrow channels vessels less than _______ shall not impede the safe passage of vessels which can navigate only inside the channel.
20 meters
A vessel sailing and a fishing vessel shall not impede the passage of a vessel which?
Can safely navigate only within a narrow channel or fairway
Systems of inbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as?
Traffic separation schemes
A vessel using a traffic separation scheme is forbidden to?
Proceed through an inappropriate traffic lane
In a traffic separation scheme, when joining a traffic lane from the side, a vessel shall do so?
At as small an angle as possible
Vessel using a traffic separation scheme should avoid anchoring in areas?
Near the termination of the scheme
A sailing vessel with the wind forward of the beam on her port side shall keep out of the way of a sailing vessel with?
The wind forward of the beam on the starboard side
If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other?
The one to windward must keep clear
If a sailing vessel with the wind on her port side sees a sailing vessel to windward and cannot tell whether the other vessel has the wind on the port or starboard, she shall?
Keep out of the way of the other vessel
Power driven vessels must keep out of the way of sailing vessels except when?
The sailing vessel is overtaking
A vessel is overtaking when?
She approaches another from more than 22.5 degrees abaft the beam
A vessel is overtaking when she can only see?
The stern light of the vessel
A vessel overtaking is relieved of her duty to keep clear when?
She is past and clear of the other vessel
In an overtaking situation any later change of bearing between the two vessels shall not?
Make the overtaking vessel a crossing vessel
When two vessels are approaching each other near head on both vessels should alter course to?
Starboard
You sight another power-driven vessel dead-ahead showing both red and green sidelights. The required action is?
Alter course to starboard and pass port to port
In a head on situation at night you would see?
Both sidelights or a vessel and her masthead light(s)
When two power driven vessels are crossing, which vessel must keep out of the way?
The vessel which has the other to starboard must keep out of the way
You should avoid crossing…
ahead of the another vessel
When two power driven vessels are crossing which vessel is the stand-on vessel?
The vessel which is to starboard of the other vessel is the stand on vessel
A stand on vessel is required to do what in a crossing situation?
Maintain course and speed, but may take action to avoid collision
When is a stand on vessel in a crossing situation allowed to take action?
When it becomes apparent to her that the give-way vessel is not taking the appropriate action
For a stand on vessel to take action to avoid collision she shall, if possible, not turn to?
Port for a vessel on her port side
A power driven vessel is underway and fishing with trolling lines. Must they keep out of the way of a sailing vessel?
Yes
A vessel underway and fishing shall keep out of the way of a vessel?
Not under command
A vessel engaged in fishing shall keep out of the way of a vessel?
restricted in her ability to maneuver
Seaplane shall in general?
Keep well clear of all vessels
The steering and sailing rules for vessels in restricted visibility apply to vessels navigating in or near?
An area of Restricted visibility
When navigating in restricted visibility, a power-driven vessel shall have her engines?
Ready for immediate maneuver
In the fog you observe your radar and determine risk of collision exists with a vessel which is 2 miles off of your port bow, when should you take action?
As soon as possible
By radar alone you detect a vessel ahead on a collision course, about 3 miles distant, radar shows this to be a meeting situation, you should?
Turn to starboard
A vessel hearing a fog signal forward of her beam has not determined if a risk of collision exists, what shall she do?
Reduce speed to bare steerageway
Navigational lights must be displayed?
In all weathers from sunset to sunrise, they may be displayed during daylight
A white masthead light shows through an arc of?
225 degrees
The arc of visibility for sidelights is from right ahead to?
22.5 degrees abaft the beam
The stern light shall be positioned such that it will show from dead astern to?
67.5 degrees on each side of the stern of the vessel
What is a yellow light with the same characteristics as a stern light?
A towing light
A power-driven vessel would exhibit sidelights when?
Underway and not making way
Minimum length a power-driven vessel must show forward and aft masthead lights?
50m
A power driven vessel less than 50m in length with a 20m tow must show?
Two masthead lights in a vertical line
A vessel whose tow exceeds 200 meters astern must exhibit?
3 white masthead lights in a vertical line
A power driven vessel towing astern shall show a towing light?
In a vertical line above the stern light
A vessel being towed astern shall show at night?
sidelights and a stern light
A partially submerged vessel or object being towed, which is not readily noticeable, shall show?
A diamond shape
A sailboat must show what when underway at night?
Red and green sidelights and a stern light
A 15m sailing vessel would be required to show?
sidelights and a stern light, but they may be in a combination lantern on the mast
If a rowboat underway at night does not show the lights specified for a sailing vessel underway, it shall show?
A white light shown in sufficient time to prevent collision
In daytime you see a large sailing vessel on the beam, you know that she is also propelled by machinery if?
She shows a black cone
A vessel engaged in trawling will show the identification lights:
Green light over white
A vessel engaged in fishing during the day would show?
Two cones, apexes together
A vessel underway but not making way and fishing other than trawling will show:
Red light over a white light
A vessel fishing at night with gear extending more than 150m horizontally outwards will show?
In the direction of the gear, one white light
A dayshape consisting of one cone with its apex upwards must be shown by a vessel?
Over 20ms, fishing, which has gear extending more than 150ms horizontally outward from it
A vessel not under command making way at night will show:
Two all-round red lights in a vertical line, sidelights and a stern light
A vessel servicing a pipeline during the day shall display?
Three black shapes in a vertical line, the highest and lowest are balls, the middle on a diamond
By day when it is impracticable for a small vessel engaged in diving operations to display the shapes for a vessel engaged in underwater operations, she shall display?
A rigid replica of the International Code flag “A”
A pilot vessel on pilotage duty shall show identity lights?
Anytime while underway, while at anchor, and when alongside a vessel
If you anchor your 25m vessel in a harbor your must show?
one all-round white light
A vessel at anchor shall display between sunrise and sunset on the forward part of the vessel where it can be best seen?
one black ball
The minimum length of an anchored vessel which is required to show a white light both forward and aft is?
50m
Working lights shall be used to illuminate the decks of a vessel over ____ while at anchor.
100m
How long is a short blast on a whistle?
1 sec
How long is a prolonged blast?
4-6 seconds
What are the only equipment required for a vessel 20 meters in length for making fog signals?
whistle and a bell
Any vessel over 100m must have a?
Gong or other equipment that will make the sounds of a gong
What is the minimum sound signaling equipment aboard a vessel 10m in length?
anything that is capable of making an efficient sound signal
What does three short blasts of the whistle mean?
I am operating astern propulsion
What does five or more short blasts of the whistle indicate?
That she is in doubt that another vessel is taking sufficient action to avoid collision
A vessel nearing a bend or an area of a channel or fairway where other vessels may be obstructed by an intervening obstruction shall sound?
one prolonged blast
Your vessel is approaching a bend and hears one prolonged blast from another vessel, you should respond?
With one prolonged blast
While underway in fog you hear a prolonged blast from another vessel, this indicates?
A power-driven vessel underway, making way
A power-driven vessel underway, and making way in fog shall sound?
A prolonged blast every 2 minutes
While underway in fog, you hear another vessel sound two prolonged blasts on the whistle, you should?
Sound only fog signals until the other vessel is sighted
While underway in the fog you hear another vessel sounding two prolonged blasts every two minutes, this indicates?
The vessel is drifting
In restricted visibility a vessel fishing with nets shall sound?
At intervals of two minutes, one prolonged blast followed by two short blasts
A rapid ringing of a bell in the fog indicates?
A vessel at anchor
A vessel that is not equipped with towing lights should show that it has a vessel in tow by?
Shinning a searchlight on the towline of the towed vessel
One of the signals, other than a distress signal, that can be used by a vessel to attract attention is?
A searchlight
A continuous sounding of a fog-signal apparatus indicates?
a vessel in distress
An orange flag showing a black circle and a square is?
A distress signal
Is a vessel constrained by draft contained in the Inland Navigational Rules?
No
The term inland waters includes:
The Great Lakes on the US side of the International boundary, the western rivers, extending to the COLREGS demarcation line
When two power-driven vessels are meeting on the great lakes, western rivers, etc. where there is current, who sounds the first signal.
The vessel downbound with the following current shall sound the first passing signal
Who has right of way upbound or downbound vessel?
downbound
A power-driven vessel crossing a river on the Great Lakes or Western Rivers must keep out of the way of:
all vessels descending or ascending the river
A masthead light may be located at other than the fore and aft centerline on a power-driven vessel less than? (inland)
12 m
According to the inland rules, a special flashing light must be:
yellow in color, placed as far forward as possible and must not show through an arc of more than 225 degrees
If your tug is pushing a barge ahead at night and it is not a composite unit, how many towing lights should you show?
Two towing lights aft on your vessel
When underway at night you see a vessel with two yellow lights displayed in a vertical line this means?
A vessel is pushing ahead
Is a special flashing light used on a vessel pushing ahead?
Yes
A single vessel being toed alongside shall show?
a special flashing light, sidelights and a stern light
A diamond shape on a towed object, an all-round white light at each end of a towed object, or a searchlight beamed from the towing vessel in the direction of the two can be used to indicate?
The presence of a partially submerged object being towed
Does a vessel less than 20m in length at anchor at night in a special anchorage area need to show any lights?
No
A barge more than 50m long is required to show what when anchored in a special anchorage area?
two white anchor lights
When shall passing signals be sounded on inland waters by power-driven vessels?
When crossing less than half a mile ahead of another power-driven vessel
When power-driven vessels are in a crossing situation, one short blast by either vessel would mean:
I intend to leave you on my port side
One and two short blast signals must be sounded on inland waters when?
two power-driven vessels are in sight of one another and are meeting at a distance of one half mile
A vessel leaving a dock or berth must sound?
a prolonged blast of the whistle only if she is a power-driven vessel
A power must sound 3 short blasts in addition to a prolonged blast when?
Backing our of a berth and in sight of another vessel
If you are overtaking a vessel in a narrow-channel you may attempt to contact her via?
radiophone to arrange for the passage
If two vessels in a crossing situation have reached an agreement via radiotelephone as to the intentions of the other, are whistle signals still required?
No but may still be used
Is a vessel of 15m in length anchored in a special anchorage area required to sound a fog signal?
No
