Rules of the road
A power-driven vessel underway shall keep out of the way of a:
vessel constrained by her draught.
The stand-on vessel shall maintain her course and speed, but may take action to avoid collision when it becomes apparent that the vessel required to keep out of the way is:
not taking appropriate action.
Existing vessels whose keels were laid before November 1981 are permanently exempt from complying with some light positioning requirements, provided they comply with:
the 1972 COLREGs.
A vessel navigating in restricted visibility shall proceed at a safe speed adapted to the prevailing:
circumstances and conditions.
A vessel engaged in fishing shall not impede the passage of any vessel following a:
traffic lane.
A vessel aground in restricted visibility shall sound the bell signal for an anchored vessel and, in addition, shall give:
three separate and distinct bell strokes before and after the bell.
A power-driven vessel of less than 7 meters in length and whose maximum speed does not exceed 7 knots may exhibit:
one all-round white light and sidelights.
What is the primary purpose of taking "early and substantial" action to avoid a collision?
To make intentions clear to the other vessel.
A vessel at anchor shall exhibit:
an all-round white light forward and another at the stern.
When two power-driven vessels are meeting on reciprocal courses, how should they both alter course?
To starboard, passing port to port.
An overtaking situation is defined as when a vessel approaches another from more than how many degrees abaft her beam?
22.5 degrees.
Assumptions should not be made on scanty information when assessing:
the risk of collision.
A sailing vessel of less than 20 meters in length may exhibit, in lieu of standard lights:
a combined lantern at the top of the mast.
Any light used to attract the attention of another vessel must not be such as to impair the visibility of any:
navigation light.
When the length of the tow from the stern of the towing vessel to the after end of the tow exceeds 200 meters, the towing vessel shall exhibit:
three masthead lights in a vertical line.
A vessel of less than 20 meters in length or a sailing vessel shall not impede the passage of:
a power-driven vessel that can only navigate within the channel.
A proper look-out must be maintained at all times using:
a proper look-out by sight and by hearing.
When engaged in dredging or underwater operations, a vessel restricted in ability to maneuver shall indicate:
the side on which an obstruction exists by two all-round red lights.
A sidelight shows an unbroken light over an arc of the horizon of how many degrees?
112.5 degrees.
The overtaking vessel must keep out of the way of the vessel being overtaken until:
she is finally past and clear.
A vessel, other than a crossing vessel or one joining or leaving a lane, shall avoid:
anchoring within a traffic separation scheme.
These Rules apply to all vessels upon the high seas and in all connecting waters navigable by:
all vessels connected therewith.
A vessel engaged in dredging, when an obstruction exists, shall exhibit on the side of the obstruction:
two black balls in a vertical line.
Which term describes a vessel not at anchor, nor made fast to the shore, nor aground?
A vessel underway.
When engaged in fishing, gear extending more than 150 meters horizontally from the vessel shall be indicated by:
an all-round white light in the direction of the gear.
A vessel engaged in fishing, other than trawling, shall exhibit by day:
two cones, apexes together.
Five or more short and rapid blasts are used to indicate:
I am in doubt about your actions.
A vessel aground shall exhibit the lights for a vessel at anchor and, in addition:
two all-round red lights in a vertical line.
A power-driven vessel of 50 meters or more in length shall exhibit:
two masthead lights, sidelights, and a sternlight.
A vessel being pushed ahead, or towed alongside, shall exhibit at the forward end:
sidelights.
A vessel aground shall exhibit by day:
three black balls in a vertical line.
When two power-driven vessels are crossing, which vessel must keep out of the way?
The vessel which has the other on her own starboard side.
A vessel restricted in her ability to maneuver shall exhibit:
three all-round lights in a vertical line, red-white-red.
When two sailing vessels are approaching one another, which vessel shall keep out of the way?
The vessel which is to windward when both are on the same tack.
A vessel engaged in trawling shall exhibit:
two all-round lights in a vertical line, green over white.
What shape should a vessel not under command exhibit during daylight?
Two black balls in a vertical line.
When navigating in restricted visibility, the term "safe speed" must be assessed with particular regard to:
the detectability of other vessels by radar.
A sailing vessel underway shall exhibit:
sidelights and a sternlight.
What shape should a vessel restricted in her ability to maneuver exhibit during daylight?
One black ball, one black diamond, one black ball in a vertical line.
Two short blasts signify:
I am altering my course to port.
A vessel engaged in mine clearance operations shall exhibit in addition to RAM lights:
three all-round white lights.
The effectiveness of action to avoid collision should be checked until the other vessel is:
finally past and clear.
A pilot vessel on pilotage duty in restricted visibility may sound, in addition to the signals prescribed for power-driven vessels underway, an identity signal of:
four short blasts.
The term "prolonged blast" means a blast of about what duration?
4 to 6 seconds.
A vessel not under command, restricted in ability to maneuver, a sailing vessel, a fishing vessel, or a vessel towing/pushing, when in restricted visibility, shall sound:
one prolonged followed by two short blasts at intervals of not more than 2 minutes.
By day, a vessel at anchor shall exhibit:
one black ball.
A sternlight shows an unbroken light over an arc of the horizon of how many degrees?
135 degrees.
The term "vessel" includes every description of water craft, including:
non-displacement craft and seaplanes.
The Rules concerning lights shall be complied with from sunset to sunrise, and during such periods:
no other lights shall be exhibited, except those that cannot be mistaken.
A vessel not under command shall exhibit:
two all-round red lights in a vertical line.
The term "short blast" means a blast of about what duration?
1 second.
What is a distress signal that could be displayed by day?
A square flag having a ball or anything similar above or below it.
A vessel of less than 50 meters in length, when at anchor, is not required to exhibit:
the all-round white light at the stern.
Where it is impracticable for a seaplane to exhibit the lights prescribed in these Rules, it shall exhibit:
lights as nearly as possible similar in character and position.
A vessel whose ability to maneuver is restricted by the nature of her work is defined as a:
vessel restricted in ability to maneuver.
When the stand-on vessel takes action, she shall avoid altering course to port for a vessel on her own:
starboard side.
Due regard must be given to any special circumstances which may make a departure from these Rules necessary to avoid:
an immediate danger.
Every vessel which is directed to keep out of the way of another vessel shall, so far as possible, take early and:
substantial action to keep clear.
A vessel intending to overtake another in a narrow channel, when action requires cooperation, shall sound:
two prolonged blasts followed by one short blast (starboard side).
A masthead light shows an unbroken light over an arc of the horizon of how many degrees?
225 degrees.
Any alteration of course and/or speed to avoid collision should be:
large enough to be readily apparent to another vessel.
Which signal is recognized as a distress signal under the Rules?
A continuous sounding with any fog-signaling apparatus.
Three short blasts signify:
I am operating astern propulsion.
A power-driven vessel underway but stopped and not making way through the water in restricted visibility shall sound:
two prolonged blasts at intervals of not more than 2 minutes.
How should a risk of collision be deemed to exist?
If the compass bearing of an approaching vessel does not appreciably change.
A vessel constrained by her draught shall, when underway, exhibit the usual lights for a power-driven vessel and, additionally:
three all-round red lights in a vertical line.
A power-driven vessel making way through the water in restricted visibility shall sound:
one prolonged blast at intervals of not more than 2 minutes.
A vessel constrained by her draught shall exhibit by day:
a black cylinder.
A vessel constrained by her draught may, in addition to the lights prescribed for power-driven vessels, exhibit:
three all-round red lights in a vertical line.
A pilot vessel on pilotage duty in restricted visibility may sound an identity signal consisting of:
four short blasts.
A vessel at anchor in restricted visibility shall ring the bell rapidly for about 5 seconds at intervals of not more than:
1 minute.
One short blast signifies:
I am altering my course to starboard.
A vessel engaged in fishing, other than trawling, shall exhibit:
two all-round lights in a vertical line, red over white.
A power-driven vessel hearing a fog signal forward of her beam should reduce her speed to:
the minimum speed required to maintain steerage.
A pilot vessel on pilotage duty shall exhibit:
an all-round white light over an all-round red light.
A vessel nearing a bend or an area where other vessels may be obscured must sound:
one prolonged blast.
A power-driven vessel when towing shall exhibit, in addition to her sidelights and sternlight:
two masthead lights in a vertical line.
In determining a safe speed, which factor must be taken into account by all vessels?
The maneuverability of the vessel.
Which of the following vessels is generally required to keep out of the way of a fishing vessel?
A power-driven vessel.
An air-cushion vessel operating in the non-displacement mode shall exhibit, in addition to the lights prescribed for a power-driven vessel underway:
an all-round flashing yellow light.