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A detailed nautical scene featuring sailing vessels, navigational lights, and a seascape under a clear sky, illustrating safe navigation practices at sea.

Navigational Rules Quiz

Test your knowledge of the International Regulations for Preventing Collisions at Sea (COLREGs) with this comprehensive quiz. Designed for mariners and maritime students, this quiz covers critical rules that every navigator should know.

19 multiple-choice questions
Engaging scenarios for real-world application
Track your progress and understanding of maritime navigation rules

19 Questions5 MinutesCreated by SailingGuide202

51. When two sailing vessels approach each other, involving risk of collision.

A) if each has the wind on a different side, the vessel with the wind on the starboard side shall keep out of the way of the other

B) if both have the wind on the same side, the vessel which is to leeward shall keep out of the way of the vessel which is to windward

C) when each has the wind on a different side, the vessel has the wind on the port side shall keep out of the way of the vessel with the wind on its starboard side

D) None of these statements are correct.

52. Where the Rules require one vessel to keep out of the way, the other vessel -----

A) shall keep her course

B) must maintain her speed

C) shall keep her course and speed

D) may take evasive action at any time

53. A stem light and/or a towing light is visible on each side of the stem over an arc of visibility of.

A) 10 points

B) 12 points

C) 67.5°

D) 135°

54. If there is any doubt that risk of collision exists, such risk

A) does not exist

B) does exist

C) shall be deemed to exist

D) may exist

55. Which is an example of a ‘special circumstance?’

A) Operating a vessel in fog.

B) Determining a safe speed in fog.

C) Three vessels in an approach situation.

D) A vessel broken down and drifting.

56. When a vessel is in doubt in a case where either an overtaking or a head-on situation with another vessel may exist, she shall.

A) assume that the situation does not exist

B) assume the situation does exist

C) immediately sound five (5) short, rapid blasts on the whistle

D) wait until the situation becomes clear

57. A vessel proceeding along a narrow channel shall

A) avoid crossing the channel at right angles

B) not overtake any vessel within the channel

C) keep as close as possible to the edge of the channel on her starboard side

D) when nearing a bend in the channel, sound a long blast on the whistle

58. On vessels 50 meters in length or over, both masthead lights must be visible at a minimum distance of.

A) 2 miles

B) 5 miles

C) 6 miles

D) between 1 and 5 miles depending on atmosphere

59. A vessel equipped with radar

A) shall use that radar when appropriate to determine if risk of collision exists

B) must use its radar at all time

C) must use its radar if fitted

D) may use its radar if appropriate to prevailing circumstances and conditions

60. Every vessel which is directed by these Rules to keep out of the way of another vessel shall, if the circumstances of the case admit, avoid

A) crossing ahead of the other

B) crossing astern of the other

C) crossing port to port

D) passing starboard to starboard

61. A power-driven vessel underway shall keep out of the way of a

A) vessel not under command

B) vessel engaged in fishing

C) sailing vessel

D) All of the above.

62. Vessel A is on course 000° true. Vessel B is on head-on course and is bearing 355° true, 200 yards away from vessel A. To ensure a safe passing, vessel A should.

A) maintain course

B) alter course to port

C) alter course to ensure a starboard to starboard

D) maneuver to ensure & port to port passing

63. How far must a masthead light on a vessel 30 meters in length be visible?

A) 2 miles

B) 4 miles

C) 3 miles

D) 5 miles

64. Which statement is true concerning risk of collision?

A) The stand-on vessel must keep out of the way of the other when risk of collision exists.

B) Risk of collision always exists when two vessels pass within one mile of each other.

C) Risk of collision always exists when the compass bearing of an approaching vessel changes appreciably.

D) Risk of collision may exist when the compass bearing of an approaching vessel is changing appreciably.

65. In a crossing situation, the vessel which has the other on her own starboard side shall.

A) if the circumstances of the case admit, avoid crossing ahead of the other

B) change course to port to keep out of the way

C) reduce her speed

D) All of the above.

66. The Rules require a power-driven vessel underway to keep out of ‘ way of all the following except.

A) pilot vessel

B) a vessel not under command

C) a vessel engaged in fishing

D) a vessel restricted in her ability to maneuver

67. The navigation lights of vessels 20 meters or more but less than 50 meters in length must be visible at these minimum ranges:

A) Masthead light, 3 miles; all other lights, 2 miles.

B) Masthead light, 5 miles; all other lights, 2 miles.

C) Masthead light, 4 miles; sidelights, 3 miles; sternlight, 2 miles; towing light, 2 miles.

D) All lights must be visible for three nautical miles.

68. The International Regulations for Preventing Collisions at Sea apply

A) to all waters which are not inland waters

B) only to waters outside the territorial waters of the Philippines

C) only to waters where foreign vessels travel

D) upon the high seas and connecting waters navigable by seagoing vessels

69. Safe speed is defined as that speed where.

A) you can stop within your visibility range

B) you can take proper and effective action to avoid collision

C) you are traveling slower than surrounding vessels

D) no wake comes from your vessel

Colreg 2

Navigational Rules Quiz

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