Nav Rules – s/v Good Stories

Nav Rules - Practice Test

Full practice test with 50 questions randomly selected from Practice Tests A, B, and C.

1 / 50

INLAND ONLY. You are approaching dead astern to another vessel and intend to overtake on the other vessel's starboard side, which whistle signal would you sound?

Two prolonged blasts

Two short blasts

One prolonged blast

One short blast

2 / 50

INLAND ONLY. As defined by the Inland Navigation Rules, the term "Inland Waters" includes?

The Great Lakes on the United States side of the International Boundary

Great Lakes as well as Harbors and rivers

Seaward of the Gulf of Mexico

Harbors and rivers shoreward of the COLREGS demarcation lines

3 / 50

BOTH INTERNATIONAL AND INLAND: Your vessel is in a storm and visibility is restricted and hear a ship's horn forward of the port beam. Nothing appears on your radar screen. You must:

Stop your engines

Sound the doubt signal

Slow to bare steerageway

Sound two prolonged blasts of the whistle

4 / 50

BOTH INTERNATIONAL AND INLAND: A tug is towing 3 manned barges inline in fog. The first barge should sound:

No fog signal

Two long blasts

One long blast

One short blast

5 / 50

BOTH INTERNATIONAL AND INLAND. According to the rules, a stand-on vessel may take action in a risk of collision situation, when she determines that the other vessel

Is not taking appropriate action

Is restricted in her ability to maneuver

Stand-on vessel cannot take action alone

Has sounded the doubt signal

6 / 50

BOTH INTERNATIONAL AND INLAND: Power-driven vessels are meeting on reciprocal courses as to involve risk of collision, which vessel may sound the doubt signal?

Neither vessel

Stand on vessel

Either vessel

Give way vessel

7 / 50

BOTH INTERNATIONAL AND INLAND. The arc of visibility for sidelights is?

112.5 degrees

180 degrees

22.5 degrees

225 degrees

8 / 50

BOTH INTERNATIONAL AND INLAND. When your vessel is equipped with operational radar, which statement is TRUE?

The use of a radar excuses a vessel from the need of a look-out.

The safe speed of such a vessel will likely be greater than that of vessels without radar

The radar equipment is only required to be used in restricted visibility

She must use this equipment to obtain early warning of risk of collision

9 / 50

INTERNATIONAL ONLY: On open water, you intend to overtake another vessel. You have sounded one short blast on the whistle. What is the meaning of this whistle signal?

"On which side should I pass?"

"What speed must I maintain to pass you?"

"I am altering my course to starboard."

"I request permission to pass you?"

10 / 50

BOTH INTERNATIONAL AND INLAND. A vessel displaying a ball-diamond-ball day shape while underway, you should:

Contact the vessel on VHF radiotelephone for instructions

None of these

Stay clear, the vessel is unable to keep out of the way of other vessels

Provide assistance, the other vessel is in distress

11 / 50

INLAND ONLY. When a power-driven vessel is leaving a dock or berth, she shall sound:

Two short blasts

Three long blasts

One prolonged blast

One short blast

12 / 50

BOTH INTERNATIONAL AND INLAND. If any, what lights, should you show at night if your vessel was broken down and being towed by another vessel?

Same lights for a vessel at anchor

None

A white light forward and a white light aft

Sidelights and a stern light

13 / 50

BOTH INTERNATIONAL AND INLAND. In restricted visibility, you hear the fog signal of another vessel forward of. your beam and determine risk of collision may exist. You MUST:

All of these

Stop your engines

Begin a radar plot

Reduce to bare steerageway

14 / 50

BOTH INTERNATIONAL AND INLAND. A vessel is engaged in fishing in a narrow channel and is meeting a power-driven vessel. Which statement is TRUE?

The fishing vessel shall not impede the passage of any other vessel navigating within a narrow channel.

Each vessel should be displaying signals for a vessel constrained by her draft

Each vessel should move to the edge of the channel on her port side

The fishing vessel has right of way

15 / 50

BOTH INTERNATIONAL AND INLAND. At anchor, what dayshape would a vessel show during sunrise to sunset?

Three black balls

Two black balls

One black ball

No signal

16 / 50

INTERNATIONAL ONLY. In which case would an overtaking vessel sound a maneuvering whistle signal of two prolonged followed by one short blast?

Overtaking in open waters

None of these

Overtaking in restricted visibility

Overtaking in a narrow channel

17 / 50

BOTH INTERNATIONAL AND INLAND. You are underway in restricted visibility when you hear "one short blast, one prolonged blast and one short blast" in succession. Which of the following would it be?

A vessel towing which exceeds 200 meters in length

A sailing vessel underway

A vessel at anchor giving an additional warning of her position

A power-driven vessel underway and making NO way through the water

18 / 50

INTERNATIONAL ONLY. The international Navigation Rules and Regulations apply to what waters?

To all waters including inland waters

Upon the high seas and connecting water navigable by seagoing vessels

To all waters including the Great Lakes and Western Rivers

Only to waters where foreign vessels travel

19 / 50

BOTH INTERNATIONAL AND INLAND. When underway, in or near an area of restricted visibility a power-driven vessel shall sound a fog signal:

Only when vessels are in sight of each other

Only on the approach of another vessel

At interval of not more than one minute

At intervals of not more than two minutes

20 / 50

BOTH INTERNATIONAL AND INLAND. At night, you see a vessel underway showing white over red lights crossing your stern. This would indicate a vessel is:

Restricted in her ability to maneuver

On pilotage duty

Engaged in fishing and making way

Not under command

21 / 50

INLAND ONLY. A vessel displaying two black balls in a vertical line means:

The vessel is unable to maneuver as required by the rules due to some exceptional circumstance

The vessel may deviate from the Rules under the Rule of Special Circumstance

The vessel is unable to maneuver as required by the Rules due to the nature of her work

The captain is not on board or in control

22 / 50

BOTH INTERNATIONAL AND INLAND: At night, you are underway and sight a combined lantern light carried at or near the top of the mast. The vessel is a:

Vessel pushing a barge ahead

Submarine operating on the surface

Air cushion vessel operating in the non-displacement mode

Sailing vessel

23 / 50

INLAND ONLY: What vessel is permitted by the rules to exhibit flashing blue lights?

Law enforcement vessel

Research vessel

Fire boat

Special security vessel

24 / 50

INLAND ONLY. Concerning the rules for narrow channels which statement is TRUE?

Any vessel shall avoid anchoring in a narrow channel

All of these

A sailing vessel may cross a channel without concern of impeding ascending or descending vessels

You should keep to that side of the channel which is on your port side

25 / 50

BOTH INTERNATIONAL AND INLAND. You are in sight and fail to understand the actions or intentions of an approaching vessel you should sound:

Five short blasts

One short blast

One prolonged blast

Five prolonged blasts

26 / 50

BOTH INTERNATIONAL AND INLAND: A white masthead light displayed by a power-driven vessel is visible over an arc of the horizon of how many degrees?

011.25 degrees

225.0 degrees

360.0 degrees

112.5 degrees

27 / 50

BOTH INTERNATIONAL AND INLAND. All underway restricted visibility signals are sounded at intervals of:

Not longer than 1 minute

Not longer than 3 minutes

Not longer than 2 minutes

Not longer than 3.5 minutes

28 / 50

BOTH INTERNATIONAL AND INLAND: In restricted visibility, a vessel which detects by radar alone the presence of another vessel shall determine if a close quarters situation is developing or risk of collision exists. If so, she shall:

All of these

Sound the doubt signal

Avoid altering course toward a vessel abaft the beam

When taking action, make only course changes

29 / 50

INTERNATIONAL ONLY. In which case would an overtaking vessel sound a maneuvering whistle signal of two prolonged followed by one short blast?

Over taking in a narrow channel

Overtaking in open waters

Overtaking in restricted visibility

None of the above

30 / 50

BOTH INLAND AND INTERNATIONAL. According to the definition of a "vessel engaged in fishing" which fishing apparatus is EXCLUDED:

Trawling

Setting nets

Trolling

Using a dredge net

31 / 50

INLAND ONLY: What lights are required for a single barge being towed alongside?

Sidelights, a special flashing light, and a sternlight

Sidelights and a flashing light

Sidelights, a towing light, and a sternlight

Sidelights, a special flashing light

32 / 50

BOTH INTERNATIONAL AND INLAND: A dayshape cone, apex downward is a:

Fishing vessel with outlying gear

Vessel proceeding under sail and machinery

Vessel being towed

Vessel engaged in diving operations

33 / 50

BOTH INTERNATIONAL AND INLAND. When underway a vessel may slacken her speed, stop or reverse her engines to:

All of these

Attract the attention of another vessel

Create a crossing situation

Allow more time to assess the situation

34 / 50

BOTH INTERNATIONAL AND INLAND. In restricted visibility while underway you may hear any of the following signals EXCEPT:

One prolonged and two short blasts at intervals of two minutes

One prolonged blast at intervals of two minutes

Two prolonged blasts at intervals of two minutes

Ringing of a bell for five seconds at intervals of two minutes

35 / 50

BOTH INTERNATIONAL AND INLAND. The arc of the horizon of a sternlight is visible by?

11.25 degrees

135 degrees

112.5 degrees

225 degrees

36 / 50

BOTH INTERNATIONAL AND INLAND. You are underway meeting another vessel head-on and see only sidelights on the other vessel. This is a:

Sailing vessel

Vessel not under command

None of these

Fishing vessel

37 / 50

BOTH INTERNATIONAL AND INLAND: At night, power-driven vessel of less than 12 meters in length exhibit which lights?

Sternlight only

Masthead light only

Sidelights and a stern light

One all-round white light and sidelights

38 / 50

INLAND ONLY. A single barge pushed ahead shall display the following lights?

Sidelights, a towing light, and a stern light

Sidelights and a special flashing light

Sidelights, a special flashing light, and a sternlight

Sidelights and a stern light

39 / 50

BOTH INTERNATIONAL AND INLAND: A vessel, engaged in fishing at anchor shows what lights?

White over green over white

Green over white over green

Red over white

All-round green over white

40 / 50

BOTH INTERNATIONAL AND INLAND: You are a 20-meter power-driven vessel and intend to anchor thru the night, you must show:

Two all-round white lights

One all-round white light

The sidelights and a stern light

One all-round white light and the sidelights

41 / 50

BOTH INTERNATIONAL AND INLAND. According to the Rules, a sailing vessel is "restricted in her ability to maneuver"?

True

False

42 / 50

BOTH INTERNATIONAL AND INLAND. You are a power-driven vessel underway, and making no way through the water when a dense fog sets in. What whistle signal would you sound?

One short, one prolonged and one short blast on the whistle

Two prolonged blasts on the whistle

One prolonged blast and two short blasts on the whistle

One prolonged blast on the whistle

43 / 50

INLAND ONLY. Which is TRUE of a power-driven vessel downbound when meeting an upbound vessel on the Western Rivers?

The vessel shall propose the manner of passage

The vessel shall initiate maneuvering signals

All of these

The vessel with a following current shall have right of way

44 / 50

BOTH INTERNATIONAL AND INLAND: A sailing vessel showing all-round white light means it is:

At anchor

Less than 50 meters

Backing down

Disabled

45 / 50

INTERNATIONAL ONLY: You are meeting another vessel in open water and will pass safely port to port without adjusting course. You should:

Hold course and sound one blast

Change course to starboard and sound one blast

Hold course and sound no whistle signal

Hold course and sound two long blasts on the whistle

46 / 50

BOTH INTERNATIONAL AND INLAND: Which vessel exhibits white over red lights when engaged in their profession?

Fishing vessel

Dredger vessel

Tow Boat

On Pilot duty

47 / 50

INLAND ONLY. When a power-driven vessel is leaving a dock or berth, she shall cound:

One short blast

One prolonged blast

Three long blasts

Two short blasts

48 / 50

INLAND AND INTERNATIONAL. Vessels which can only navigate within a narrow channel or fairway shall NOT have their passage impeded by:

A vessel of less than 20 meters in length

All of these

A vessel engaged in surveying

A vessel not under command

49 / 50

BOTH INTERNATIONAL AND INLAND. A power-driven vessel not under command shall display two all-round red lights in a vertical line where they can best be seen, sidelights and a sternlight when:

The radar equipment is only required to be used in restricted visibility

Making way through the water

Anchored

Aground

50 / 50

BOTH INTERNATIONAL AND INLAND. An overtaking situation is deemed when one vessel is approaching another from more than how many degrees abaft the beam?

10

0

None of these

22.5

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