Navigation Lights Definitions

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What type of light arrangement is required for a vessel engaged in trawling at night?

No lights are required for a vessel engaged in trawling at night

A masthead light abaft of and higher than the all-round green light

Two all-round lights in a vertical line, the upper being green and the lower white (correct)

Two all-round lights in a vertical line, the upper being red and the lower white

How often must a vessel engaged in fishing operations, other than trawling, sound a signal in restricted visibility?

At intervals of not more than 3 minutes

At intervals of not more than 2 minutes (correct)

No sound signals are required for a vessel engaged in fishing operations, other than trawling, in restricted visibility

At intervals of not more than 1 minute

What shape must a vessel engaged in trawling display during the day?

Two cones with their apexes together in a vertical line one above the other (correct)

A single cone with the apex upwards

No shape is required to be displayed by a vessel engaged in trawling during the day

A single cone with the apex downwards

What type of light arrangement is required for a vessel engaged in fishing, other than trawling, at night?

Two all-round lights in a vertical line, the upper being red and the lower white Signup and view all the answers

What is the minimum length of a vessel engaged in trawling that is required to exhibit a masthead light abaft of and higher than the all-round green light?

50 m Signup and view all the answers

What lights should a power-driven vessel of 12 m or more in length display?

Masthead light forward, second masthead light abaft or sidelights, sternlight Signup and view all the answers

What should a power-driven vessel do when making way through the water in restricted visibility?

Sound one prolonged blast at intervals of not more than 2 minutes Signup and view all the answers

What should a power-driven vessel underway but stopped and making no way through the water do in terms of sound signals?

Sound two prolonged blasts in succession with an interval of about 2 seconds between them Signup and view all the answers

In a power-driven vessel of less than 20 m in length, where can the sidelights be combined?

On the fore-and-aft centre line of the vessel Signup and view all the answers

What should a vessel do when at anchor according to the text?

Ring the bell rapidly for about 5 seconds Signup and view all the answers

What is the meaning of the term 'sternlight'?

A white light showing an unbroken arc of 135 degrees from the stern Signup and view all the answers

What are the characteristics of a 'towing light'?

A yellow light having the same characteristics as the 'sternlight' Signup and view all the answers

What is the meaning of the term 'all-round light'?

A light showing an unbroken light over an arc of the horizon of 360 degrees Signup and view all the answers

What is the meaning of the term 'flashing light'?

A light flashing at regular intervals of 120 flashes or more per minute Signup and view all the answers

What is the meaning of the term 'short blast'?

A blast of about one second's duration Signup and view all the answers

What is the requirement for sidelights on vessels less than 20 meters in length?

Sidelights must be fitted with inboard matt black screens to meet 'Horizontal Sectors' requirements Signup and view all the answers

Navigation Lights Definitions

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