NAV LIGHTS

Question 1

Arc of visibility of the masthead light

Answer 1

225 degrees

Question 2

Arc of visibility of sidelights?

Answer 2

112.5 degrees / 22.5 Abaft the beam

Question 3

Arc of visibility of stern light?

Answer 3

135 degrees

Question 4

Arc of visibility of tow light?

Answer 4

135 degrees

Question 5

Arc of visibility of all around light?

Answer 5

360 degrees

Question 6

Flashing lights flash at intervals of?

Answer 6

120 or more per minute

Question 7

inland special flashing light?

Answer 7

180-225 degrees of visibility. Flashing 50-70 per minute

Question 8

A vessels of 50m or more in length may exhibit what lights? What are the ranges of these lights?

Answer 8

2 Masthead Light, 6 miles
Sidelights, 3 miles
Sternlight, 3 miles
White, red, green, or yellow all round light, 3miles

Question 9

vessels of less than 50m in length may exhibit what lights? What are the ranges of these lights?

Answer 9

Masthead Light, 5 miles
Sidelights, 2 miles
Sternlight, 2 miles
White, red, green, or yellow all round light 2 miles

Question 10

A vessels of less than 12m in length may exhibit what lights? What are the ranges of these lights?

Answer 10

Masthead Light, 2 miles
Sidelights, 1 mile
Sternlight, 2 miles
White, red, green, or yellow all round light, 2 miles

Question 11

A power driven vessel >50m in length underway shall exhibit what lights?

Answer 11

2 masthead lights

• A masthead light forward
• A second masthead light abaft and higher than the forward light

Sidelights

Sternlight

Question 12

A power driven vessel less than 50m in length shall exhibit what lights?

Answer 12

A masthead light forward (but may have a second masthead light abaft the forward masthead light)

Sidelights

Sternlight

Question 13

A vessel less than 12m may exhibit what lights?

Answer 13

1 all round white light

Sidelights

Question 14

A power driven vessel less than 7m in length may exhibit what lights?

Answer 14

1 all round white light?

Question 15

A power driven vessel operating in the Great Lakes may exhibit what lights?

Answer 15

Masthead light

May exhibit an all round white light instead of a masthead light in the aft part of the vessel

Sidelights

Question 16

A power driven vessel >50 m in length when towing shall exhibit what lights when the tow exceeds 200m?

Answer 16

3 masthead lights in a vertical line

Sidelights

Sternlight

Towing light in a vertical line above the sternlight

A diamond day shape where it can best be seen

Question 17

A power driven vessel less than 50m when towing less than 200m shall exhibit what lights?

Answer 17

2 masthead lights in a vertical line

Sidelights

Sternlight

Towing light in a vertical line above the sternlight

Question 18

A vessel pushing ahead in tow and are connected in a composite unite shall be considered a power driven vessel and exhibit what lights when 50m or more?

Answer 18

2 masthead lights, one forward and one aft, aft masthead light must be higher then forward

Question 19

Inland. a vessel being pushed ,or towed alongside shall exibt on the bow

Answer 19

sidelights and a special flashing light

Question 20

a saiing vessel less than 20m in length may exibit a

Answer 20

combined latern on the mast head/ or red over green ias a masthead.