Nav Lights

Question 1

Definition of masthead light?

Answer 1

“Masthead light” means a white light placed over the fore and aft centreline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on either side of the vessel.

Question 2

Definition of sidelights?

Answer 2

“Sidelights” means a green light on the starboard side and a red light on the port side each showing an unbroken light over an arc of the horizon of 112.5 degrees and so fixed as to show the light from the right ahead to 22.5 degrees abaft the beam on its respective side. In a vessel of less than 20 metres in length the sidelights may be combined in one lantern carried on the fore and aft centreline of the vessel.

Question 3

Definition of the stern light?

Answer 3

Back
Stern Light

“Sternlight” means a white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135 degrees and so fixed as to show the light 67.5 degrees from right aft on each side of the vessel.

Question 4

Definition of towing light?

Answer 4

“Towing light” means a yellow light having the same characteristics as the “sternlight”.

Question 5

Definition of all round light

Answer 5

“All-round light” means a light showing an unbroken light over an arc of the horizon of 360 degrees.

Question 6

Definition of flashing light?

Answer 6

“Flashing light” means a light flashing at regular intervals at a frequency of 120 flashes or more per minute.

Question 7

What light should a small vessel under oars have?

Answer 7

A small vessel under oars should carry a torch with a white light, which should be shone at approaching vessels to prevent collision.

Question 8

What lights should a sailing vessel < 20m have?

Answer 8

Sailing vessels under 20 metres may show combined red and green sidelights at the bow plus a stern light, or alternatively a masthead tricolour light.

Question 9

What lights should a sailing vessel >20m have?

Answer 9

Sailing vessels over 20 metres must show separate sidelights plus a stern light.

Question 10

What are the option lights a sailing vessel > 20m can show?

Answer 10

Sailing vessels over 20 metres must show separate sidelights plus a stern light. They can also show optional all-round red over green lights in a vertical line at the masthead.

Question 11

What lights must a sailing vessel under power show?

Answer 11

Sailing vessels under power must display a masthead steaming light, a stern light, plus red and green sidelights. In sailing vessels under 20 metres in length the sidelights can be combined in one lantern on the bow.

Question 12

What lights should a power vessel under 7m show?

Answer 12

Power driven vessels under 7 metres and with a maximum speed of less than 7 knots must show an all-round white light. Sidelights are optional.

Question 13

What lights should a power vessel < 20m show?

Answer 13

Power driven vessels under 20 metres must show a stern light, a masthead steaming light and sidelights, which can be combined in one lantern at the bow. They have the option to combine their masthead and stern lights into one all-round masthead light.

Question 14

What lights should a power vessel <50m show?

Answer 14

Power driven vessels under 50 metres must show separate sidelights, a masthead steaming light and a stern light.

Question 15

What lights must a power vessel >50m show?

Answer 15

Power driven vessels over 50 metres must show two masthead steaming lights. The steaming light closest to the stern must be higher than the one forward. They must also show separate sidelights and a stern light.

Question 16

What lights must be shown when towing a vessel <200m?

Answer 16

Two white masthead lights in a verticals line

Question 17

What lights should a vessel show towing >200m?

Answer 17

Three white masthead lights in a vertical line

Question 18

From a stern view of a power driven vessel that is towing what lights should you expect to see?

Answer 18

a white stern light and a yellow towing light in a vertical line above the sternlight

Question 19

What lights would you see on a fishing vessel?

Answer 19

A vessel engaged in fishing, other than trawling, shall exhibit two all-round lights in a vertical line, the upper being red and the lower white

Question 20

What lights what you expect to see if a vessel that is trawling?

Answer 20

two all-round lights in a vertical line, the upper being green and the lower white

Question 21

What lights would you expect to see for a vessel not under command/ aground?

Answer 21

A vessel not under command shall exhibit: two all-round red lights in a vertical line where they can best be seen

Question 22

What lights should you expect to see for a vessel with a restricted ability to manoeuvre?

Answer 22

three all-round lights in a vertical line where they can best be seen. The highest and lowest of these lights shall be red and the middle light shall be white

Question 23

What like would you expect to see on a vessel constrained by its draught?

Answer 23

exhibit where they can best be seen three all-round red lights in a vertical line

Question 24

What lights would you expect a pilot vessel to show?

Answer 24

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

Question 25

What lights would you expect to see for a vessel <50m?

Answer 25

an all-round white light

Question 26

What lights would you expect to see for a vessel >50m?

Answer 26

Two all round white lights at the stern and the bow with the bow being higher