SETS 6000 COLREG Answers (Deck, Operational)
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What lights shall a sailing vessel underway exhibit?
Sidelights and a sternlight.
All-round white light.
Masthead light and sidelights.
Masthead light and sidelights.
What sound signals shall a vessel restricted in her ability to manoeuvre give, when carrying out her work, at anchor, in conditions of restricted visibility?
One prolonged blast at intervals of not more than 2 minutes.
Two prolonged blasts followed by one short blast at intervals of not more than 2 minutes.
One prolonged blast followed by 2 short blasts at intervals of not more than 2 minutes.
Three short blasts at intervals of not more than 2 minutes.
Which vessel\'s way shall a power-driven vessel underway keep out of?
Vessels engaged in fishing.
Sailing vessels.
Vessels restricted in their ability to manoeuvre.
Vessels constrained by their draught.
What does the term \'prolonged\' mean?
A blast of from 4 to 6 seconds\' duration.
A blast of from 1 to 3 seconds\' duration.
A blast of from 6 to 8 seconds\' duration.
A blast of from 8 to 10 seconds\' duration.
What sound signals shall a composite unit, pushing vessel-vessel being pushed ahead give, when stopped and not making way through the water, in conditions of restricted visibility?
1 prolonged blast at intervals of not more than 2 minutes.
3 prolonged blasts at intervals of not more than 2 minutes.
2 prolonged blasts at intervals of not more than 2 minutes.
2 short blasts followed by 1 prolonged blast at intervals of not more than 2 minutes.
A towing light _____________.
Is white in color.
Is red in color.
Is green in color.
Is yellow in color.
If you sighted three red lights in a vertical line on another vessel at night, it would be a vessel _____________.
Restricted in her ability to manoeuvre.
Constrained by her draft.
Engaged in fishing.
A vessel not under command.
Yellow lights are NOT shown by _____________.
Towing vessels towing astern.
Vessels engaged in fishing.
Towing vessels pushing ahead.
Vessels restricted in their ability to manoeuvre.
You sight a vessel bearing 3 points abaft the starboard beam. Sometime later, it is bearing 3 points forward of the starboard beam. Which of the following circumstances apply?
A head-on situation.
A vessel overtaking situation.
A crossing situation.
A vessel approaching from the port side.
What is the duration of a prolonged blast?
4-6 seconds.
1-3 seconds.
6-8 seconds.
8-10 seconds.
When is a vessel \'UNDERWAY\'?
When she is proceeding through the water under her own power.
When she is underway only in restricted visibility.
When she is making way through the water at a speed above 5 knots.
When she is not at anchor or made fast to the shore.
At night, you notice, in addition to other lights, two yellow lights in a vertical line which flash alternately every second. What does this indicate?
A vessel engaged in trawling operations.
A vessel restricted in her ability to manoeuvre.
A fishing vessel hampered by her purse seine gear.
A vessel engaged in underwater operations.
Which signal is sounded ONLY by a vessel in sight of another?
One prolonged blast on the whistle.
One short blast on the whistle.
Two prolonged blasts on the whistle.
Three short blasts on the whistle.
What lights shall an inconspicuous, partly submerged vessel or object more than 25 meters in breadth, exhibit?
4 all-round white lights at the after end, forward end and on each side at the extremities of her breadth.
2 all-round white lights at the forward and after ends.
4 all-round red lights at the extremities of her breadth.
2 all-round white lights, one at each side of the vessel.
What shapes shall a vessel engaged in trawling exhibit?
A shape consisting of 2 spheres in a vertical line.
A shape consisting of 2 cones with their apexes together.
A shape consisting of a cylinder with a cone above it.
A shape consisting of 2 cones with their bases together.
If at night a vessel displays three all-round red lights in a vertical line, during the day she may show ...
A Sphere.
Two cones with their apexes together.
A Cylinder.
Two black balls in a vertical line.
You are underway on a tanker and observe the lights illustrated on a steady bearing and at decreasing range on the PORT bow. What do you do?
Alter course to PORT and sound TWO short blasts.
Maintain course and speed and sound ONE prolonged blast.
Alter course to STARBOARD and sound ONE short blast.
Alter course to STARBOARD and sound TWO short blasts.
What type of vessel is shown here?
A vessel engaged in fishing operations.
A vessel restricted in her ability to manoeuvre.
A vessel engaged in towing operations.
A vessel engaged in mine clearance operations.
The lights shown indicate a vessel ......
Towing, tow of more than 200 m in length, unable to deviate from her course.
Towing, tow of less than 200 m in length, unable to deviate from her course.
Towing, tow of less than 200 m in length, restricted in her ability to manoeuvre.
Pushing ahead, unable to deviate from her course.
What is the arc (angle) of visibility of a stern light?
135 degrees.
112,5 degrees.
180 degrees.
225 degrees.
How shall vessels engaged in fishing conduct in a traffic separation scheme?
They shall keep to the centre of the traffic lane.
They shall cross the traffic lane only in the direction of traffic flow.
They shall not impede the passage of any vessel following a traffic lane.
They shall always give way to vessels crossing the traffic lane.
A power-driven vessel pushing ahead or towing alongside displays navigation lights and _________________.
Two white sternlights in a vertical line.
Two white masthead lights in a vertical line.
One white masthead light and one yellow towing light.
Two yellow masthead lights in a vertical line.
If another ship does not appear to be taking sufficient action to avoid a collision, what should you do according to the Collision Regulations?
Sound 5 short and rapid blasts on the whistle.
Sound 3 prolonged blasts on the whistle.
Sound 2 short and rapid blasts on the whistle.
Sound 1 prolonged blast followed by 2 short blasts.
When a vessel of length 20 m or more is required by the rules to carry two or three lights in a vertical line, what spacing is required between the lights?
Not less than 1 metre.
Not less than 3 metres.
Not less than 5 metres.
Not less than 2 metres.
What lights shall a sailing vessel underway exhibit?
Masthead light and sternlight.
Two all-round white lights.
Sidelights and a sternlight.
Sidelights and an all-round white light.
A vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing and/or risk of collision exists. If so, she shall take avoiding actions in ample time; however, if such action consists of an ...
An alteration of course to port towards a vessel forward of the beam.
An alteration of course towards a vessel or abaft the beam.
An alteration of course to starboard towards a vessel forward of the beam.
An alteration of course away from a vessel or towards the beam.
How shall 2 power-driven vessels manoeuver, when navigating on reciprocal or nearly reciprocal courses, so as to involve risk of collision?
Each shall alter her course to starboard so that each shall pass on the port side of the other.
Each shall alter her course to port so that each shall pass on the starboard side of the other.
The vessel with the other on her starboard side shall alter course to starboard.
Both vessels shall maintain their course and speed until the risk of collision has passed.
What lights shall a pushing vessel and a vessel being pushed ahead exhibit, when they are rigidly connected in a composite unit?
The lights of two power-driven vessels, each underway.
The lights of a towing vessel with a yellow towing light.
The lights of a single power-driven vessel, underway.
The lights of a vessel restricted in her ability to manoeuvre.
What shapes shall a vessel engaged in trawling exhibit?
A shape consisting of 2 cones with their bases together.
A shape consisting of 2 cones with their apexes together.
A shape consisting of 2 spheres in a vertical line.
A shape consisting of a cylinder with a cone above it.
What shall a vessel of less than 12 meters in length do, in conditions of restricted visibility, when she cannot give the signals prescribed by the rules?
She shall give one prolonged blast at intervals of one minute.
She shall give two prolonged blasts followed by one short blast at intervals of two minutes.
She shall give three short blasts at intervals of one minute.
She shall give a sound signal on the whistle consisting of 5 short blasts at intervals of one minute.
In open waters, you see the lights (shown in the picture) right ahead at medium range. What do you do?
Sound one short blast and alter course to starboard.
Sound two short blasts and alter course to port.
Maintain course and speed and sound one prolonged blast.
Alter course to port and sound three short blasts.
What type of vessel is shown here?
A Sailing vessel.
A Vessel engaged in fishing.
A Power-driven vessel.
A Vessel not under command.
What lights shall a power-driven vessel underway, less than 50 meters in length, exhibit?
Two masthead lights, sidelights, a sternlight.
A masthead light, sidelights, a sternlight.
A masthead light, two all-round white lights, a sternlight.
Sidelights and two sternlights.
Your vessel is crossing a narrow channel. A vessel to port is within the channel and crossing your course. She is showing a black cylinder. You should _______________.
Not impede the other vessel.
Alter course to port and cross ahead of the other vessel.
Maintain course and speed and sound one short blast.
Stop the vessel until the other vessel has passed.
What sound signals shall a pilot vessel give in conditions of restricted visibility, when underway and engaged on pilotage duty?
Two prolonged blasts at intervals of not more than 2 minutes and an identity signal consisting of 3 short blasts.
One prolonged blast at intervals of not more than 2 minutes and in addition an identity signal consisting of 4 short blasts.
One prolonged blast followed by 2 short blasts at intervals of not more than 2 minutes.
Three short blasts at intervals of not more than 2 minutes and an identity signal consisting of 4 prolonged blasts.
What does the term \'vessel engaged in fishing\' mean?
Any vessel carrying fishing equipment, whether or not it is being used.
Any vessel engaged in catching fish with nets only.
Any vessel carrying fish or other marine products for commercial purposes.
Any vessel fishing with nets, lines, trawls or other fishing apparatus which restrict manoeuvrability.
What lights shall the objects or vessels being towed exhibit, other than inconspicuous vessels or objects?
A masthead light, sidelights and a sternlight.
Sidelights and a sternlight.
Two all-round white lights and a sternlight.
Sidelights and a yellow towing light.
What shapes shall a vessel aground exhibit?
A Cylinder.
A Sphere.
Two black balls in a vertical line.
Three black balls in a vertical line.
A 20-meter power-driven vessel pushing ahead or towing alongside will display _____________.
One masthead light and one sternlight in a vertical line.
Two all-round white lights in a vertical line.
Two masthead lights in a vertical line.
Three masthead lights in a vertical line.
What light or lights must be carried by a group of three barges in a line being pushed ahead of a tug as shown here?
A white masthead light at the forward end of the leading barge.
Two all-round white lights at the forward end of the leading barge.
A yellow towing light at the forward end of the leading barge.
Red and green sidelights at the forward end of the leading barge.
In a narrow channel, a vessel trying to overtake another on the other vessels port side, would sound a whistle signal of_____________.
Two prolonged blasts followed by one short blast.
Two prolonged blasts followed by two short blasts.
One prolonged blast followed by two short blasts.
One prolonged blast followed by one short blast.
A vessel which detects by radar alone the presence of another vessel shall determine if a close-quarters situation is developing and/or risk of collision exists. If so, she shall take avoiding action in ample time; however, if such action consists of an a ...
An Alteration of course to starboard for a vessel forward of the beam, including for a vessel being overtaken.
An Alteration of course to port for a vessel abaft the beam, except when being overtaken.
An Alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken.
An Alteration of speed only, without changing course, for a vessel forward of the beam.
What lights shall a power-driven vessel underway, of 50 meters or more in length, exhibit ?
A masthead light forward, a second masthead light abaft of and higher than the forward one, sidelights and a sternlight.
A Masthead light forward, sidelights and two sternlights.
Two Masthead lights at the same height, sidelights and a sternlight.
A Masthead light aft, a second masthead light forward and lower than the aft one, sidelights and a sternlight.
What signal shall a vessel give, when approaching a bend or obstruction that may obscure another vessel and hearing a prolonged blast?
Two Prolonged blasts.
One Prolonged blast followed by two short blasts.
Three Short blasts.
One Prolonged blast.
What sound signals shall a pilot vessel give, when stopped and not making way through the water, engaged on pilotage duty in cond?
One Prolonged blast every two minutes and two short identity blasts.
The Blasts of stopped vessel not making way through the water and in addition 4 short identity blasts.
The Sound signal for a vessel making way and in addition 2 prolonged blasts.
Four Short blasts only, repeated at intervals of two minutes.
At range 2 miles and steady bearing, you sounded 5 short blasts: it is apparent that the other vessel is not taking appropriate action. What should you do?
Sound Two short blasts and alter to port.
Sound One prolonged blast and maintain course and speed.
Sound One short blast and alter to starboard.
Sound Three short blasts and stop the engines.
If a vessel of length 20 metres or more is required by the rules to carry two or three lights in a vertical line, at what height above the hull (except where a towing light is required) must the lowest of these be placed?
Not Less than 2 metres.
Not Less than 4 metres.
Not Less than 3 metres.
Not Less than 5 metres.
You are in charge of a 250-meter freight vessel constrained by her draft proceeding down a narrow channel. There is a vessel engaged in fishing on your starboard bow half a mile away. According to Rule 9, which statement is TRUE?
If You Are in doubt as to the fishing vessel\'s intentions you may sound at least five short and rapid blasts on the whistle.
If You Are in doubt as to the fishing vessel\'s intentions you may sound two prolonged blasts followed by two short blasts.
If You Are in doubt as to the fishing vessel\'s intentions you must alter course to port immediately.
If You Are in doubt as to the fishing vessel\'s intentions you must stop your vessel and wait for a signal.
What lights shall a power-driven vessel exhibit when pushing ahead or towing alongside, this not being the case of a composite unit?
2 Masthead lights forward at the same height, sidelights, a sternlight.
1 Masthead light forward, sidelights, and 2 sternlights.
2 Masthead lights forward in a vertical line, sidelights, a sternlight.
2 Masthead lights aft in a vertical line, sidelights, and a sternlight.
When shall a vessel engaged in fishing exhibit the prescribed lights and shapes?
While Underway only.
While At anchor only.
While Making way through the water only.
While Underway and at anchor.
A power-driven vessel pushing ahead or towing alongside will show sidelights, a stern light, and_________________.
Two Masthead lights in a horizontal line.
Two Masthead lights in a vertical line.
One Masthead light above the sternlight.
Three Masthead lights in a vertical line.
How shall a vessel navigate along a narrow channel or fairway?
As Near to the outer limit of the channel or fairway which lies on her starboard side as is safe and practicable.
As Near to the centre of the channel or fairway as is safe and practicable.
As Near to the outer limit of the channel or fairway which lies on her port side as is safe and practicable.
In The middle of the channel or fairway, regardless of the traffic conditions.
This vessel is on a steady bearing, the range is 2 miles and reducing. What action should you take?
One Short blast and alter course to starboard.
Two Short blasts and alter course to port.
Five Short and rapid blasts and stand on with caution.
Three Short blasts and stop the engines.
What type of vessel is shown here?
A Vessel restricted in her ability to manoeuvre.
A Vessel not under command.
A Vessel engaged in fishing.
A Vessel constrained by her draught.
What is the fog signal of this vessel?
A Rapid ringing of the bell for about 5 seconds repeated every 2 minutes.
One Prolonged blast repeated every minute.
Two Prolonged blasts followed by one short blast repeated every 2 minutes.
A rapid ringing of the bell for about 5 seconds repeated every minute.
This vessel is on a steady bearing, the range is 2 miles and reducing slowly. What action would you take?
Make a substantial reduction of speed.
Alter Course to starboard and maintain speed.
Stop The engines and keep the vessel\'s present course.
Increase Speed and alter course to port.
What is the range of the mast light being displayed by this ship?
3 Miles.
4 Miles.
6 Miles.
5 Miles.
Your vessel is backing out of a slip in a harbor. Visibility is restricted. You should sound _________________.
Two Prolonged blasts.
One prolonged blast only.
One Short blast followed by one prolonged blast.
Three Prolonged blasts.
Which signal is sounded ONLY by a vessel in sight of another and NOT in or near an area of restricted visibility?
Two Short blasts on the whistle.
Three Short blasts on the whistle.
One short blast on the whistle.
One Prolonged blast on the whistle.
What lights shall a pushing vessel and a vessel being pushed ahead exhibit, when they are rigidly connected in a composite unit?
The Lights of a vessel engaged in towing astern.
The Lights of a vessel restricted in her ability to manoeuvre.
The Lights of two separate power-driven vessels, each underway.
The Lights of a single power-driven vessel, underway.
What lights shall a vessel restricted in her ability to manoeuver exhibit, when not making way through the water?
Three Lights in a vertical line, all being white.
Three Lights in a vertical line, the highest and the lowest being red and the middle one white.
Three Lights in a vertical line, the highest and the lowest being white and the middle one red.
Three Lights in a vertical line, the highest being red and the middle and lowest being white.
What is the length of the vessel shown here?
Less than 50 metres in length.
Less Than 20 metres in length.
Between 50 and 100 metres in length.
100 metres or more in length.
What is the length of the vessel shown here?
Less Than 20 metres in length.
Between 20 and 50 metres in length.
50 metres or more in length.
May be any length but probably 50 metres or more.
What additional lights shall a trawler engaged in fishing exhibit, when hauling her nets and fishing in close proximity to other vessels engaged in fishing?
One Green light over one white light in a vertical line.
One white light over one red light in a vertical line.
One Red light over one white light in a vertical line.
Two White lights in a vertical line.
When shall the lights prescribed by these rules be also exhibited?
From Sunset to sunrise, in all conditions of visibility.
During Daylight hours only, when visibility is unrestricted.
From sunrise to sunset, restricted visibility and in all other circumstances when it is deemed necessary.
Only During restricted visibility and when vessels are in close proximity.
What shapes shall a vessel restricted in her ability to manoeuvre exhibit?
Three Shapes in a vertical line, all being balls.
Two Shapes in a vertical line, the highest being a ball and the lowest a diamond.
Three Shapes in a vertical line, the highest and lowest being diamonds and the middle one a ball.
3 shapes in a vertical line, the highest and the lowest being a ball and the middle one a diamond.
In the Collision Regulations, the Government of any State can make provision for special rules allowing the use of additional whistle signals between which vessels?
Merchant vessels and fishing vessels.
Passenger vessels and pilot vessels.
Warships and vessels sailing under convoy.
Towing vessels and vessels restricted in their ability to manoeuvre.
Whilst proceeding along a narrow channel the vessel astern sounds two prolonged blasts followed by one short blast. What does this mean?
Intend to overtake you on your starboard side.
Intend To overtake you on your port side.
Intend To overtake you on your starboard side and pass on your port side.
Intend To overtake you on your port side and pass on your starboard side.
How shall a power-driven vessel navigate in conditions of restricted visibility?
At a moderate speed and her engines stopped.
At a safe speed with her engines stopped unless danger is detected.
At a safe speed and her engines ready for immediate manoeuvre.
At full speed with her engines ready for manoeuvre.
What range shall the mast light be visible at, for vessels less than 12 m in length?
1 Nautical mile.
2 Nautical miles.
3 Nautical miles.
4 Nautical miles.
What additional sound signal shall a vessel at anchor give, in conditions of restricted visibility to give warning of her position and of the possibility of collision to an approaching vessel?
One Short blast followed by two prolonged blasts and then one short blast.
Two Short blasts followed by one prolonged blast and then two short blasts.
One Prolonged blast followed by two short blasts and then one prolonged blast.
One short blast followed by one prolonged blast and then one short blast.
What lights shall a vessel not under command exhibit, when not making way through the water?
2 All-round white lights in a vertical line.
2 All-round red lights in a horizontal line.
2 all-round red lights in a vertical line.
1 All-round red light over 1 all-round white light.
For a power driven vessel of 110 metres in length and 20 metres beam, what is the maximum height above the hull that the forward masthead light can be carried?
12 metres.
10 metres.
14 metres.
16 metres.
A vessel is at anchor and displaying two anchor lights. What is the minimum vertical distance between the forward anchor light and the after anchor light?
Not Less than 3,5 metres.
Not Less than 5 metres.
Not less than 4,5 metres.
Not Less than 6 metres.
What is the minimum vertical separation of the mast lights on power driven vessels such that, in all normal conditions of trim, the after light will be seen over and separate from the forward light?
So It can be seen at 500 metres from the stem at sea level.
So it can be seen at 1 000 metres from the stem at sea level.
So It can be seen at 1 500 metres from the stem at sea level.
So It can be seen at 2 000 metres from the stem at sea level.
What type of vessel is shown here?
A Vessel which is not under command.
A Vessel restricted in her ability to manoeuvre.
A Vessel which is constrained by her draught.
A vessel which is aground.
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Senior Mate with 12+ years of experience in the international merchant marine.
- Development and implementation of navigation and on-board safety plans.
- Supervising the work of the crew and assisting the captain in managing the vessel.
- Participation in training of junior crew, ensuring compliance with safety standards.
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