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Free Rules & Lights Diagnostic

How Strong Is Your Rules & Lights Knowledge?

Take this free 10-question diagnostic to check your collision regulations and vessel-recognition knowledge. You will receive explanations and a recommended next step based on your result.

Free Rules & Lights Diagnostic

Discover your strongest and weakest Rules and Lights areas.

10 questions · Pass mark 70%

Question 1 of 10If there is any doubt whether risk of collision exists, what should you assume?

The other vessel will alter course Risk of collision exists The faster vessel has priority There is no risk until bearings are steady

Please choose an answer.

Question 2 of 10What is every vessel required to maintain at all times?

A lookout only above 10 knots A radio watch only A proper lookout by sight, hearing and all available means A lookout only in darkness

Please choose an answer.

Question 3 of 10A power-driven vessel under 12 m may display what simplified arrangement?

A yellow flashing light only One red light only An all-round white light and sidelights Sternlight without sidelights

Please choose an answer.

Question 4 of 10What colors are a vessel’s sidelights?

Yellow to starboard and blue to port Green to starboard and red to port White on both sides Red to starboard and green to port

Please choose an answer.

Question 5 of 10In a narrow channel, where should a vessel keep when safe and practicable?

Near the outer limit on her starboard side Near the port-side limit Wherever the current is weakest In the center of the channel

Please choose an answer.

Question 6 of 10Which activity is indicated by a red all-round light above a white all-round light?

Night view showing a red light above a white light.

Pilotage duty Trawling Fishing other than trawling Sailing under sail alone

Please choose an answer.

Question 7 of 10What day shape does a sailing vessel display when also propelled by machinery?

A black cylinder A black ball Two cones apex together A black cone apex downward

Please choose an answer.

Question 8 of 10In the crossing situation shown, the other power-driven vessel is on your port side. What is your initial responsibility?

Overhead crossing diagram with your vessel heading north and another vessel approaching from port.

Alter to port immediately Sound the overtaking signal Keep course and speed while monitoring the situation Always stop

Please choose an answer.

Question 9 of 10A sailing vessel displays a cone with its apex pointing down. What does this mean?

Day view showing one black cone with its apex downward.

She is constrained by her draught She is fishing She is at anchor She is also being propelled by machinery

Please choose an answer.

Question 10 of 10What is the purpose of proceeding at a safe speed?

To maintain the posted maximum speed To allow proper action to avoid collision and stop within an appropriate distance To minimize fuel consumption To keep ahead of all slower vessels

Please choose an answer.

This diagnostic is educational practice and is not an official licence or certification examination.

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