11-49.
International Rules of the Road require that rules
for lights are to be complied with from sunset to
sunrise. During what periods must lights be
complied with under Inland Rules?
1.
2.
3.
4.
1 hour before sunset to 1 hour before
sunrise
1 hour after sunset to 1 hour before
sunrise
1 hour before sunset to 1 hour after
sunrise
Sunset to sunrise
11-50.
The fore masthead light on a power-driven
vessel is how many feet above the deck?
1.
Between 10 and 15
2.
Between 15 and 30
3.
Between 20 and 40
4.
45
11-51.
A vessel over 50 meters in length shows a white
light aft. How many feet is this light higher
than the fore masthead light?
1.
10 ft
2.
15 ft
3.
20 ft
4.
25 ft
11-52.
Depending on the size of the vessel, side lights
must be visible from what distance?
1.
1 to 3 miles
2.
2 to 4 miles
3.
3 to 6 miles
4.
5 to 8 miles
11-53.
What should be the arc of horizon of the side
light?
1.
112.5°
2.
115.5°
3.
125.5°
4.
135.5°
11-54.
What should be the arc of horizon of the stern
light?
1.
100°
2.
115°
3.
125°
4.
135°
11-55.
What light signal indicates a pilot vessel?
1.
White over white
2.
White over red
3.
Red over white
4.
Red over red
11-56.
What is the daylight display for a ship anchored
in a channel?
1.
A diamond shape forward
2.
A diamond shape aft
3.
A ball shape forward
4.
A ball shape aft
11-57.
A power-driven vessel greater than 50 meters is
towing astern, with the length of tow less than
200 meters. What light should it display?
1.
2.
3.
4.
Two masthead lights, side lights, and a
white stern light
Three masthead lights, side lights, and a
yellow stern light
Two masthead lights, an after masthead
light, side lights, and a yellow-over-white
stern light
Two masthead lights, side lights, and a
yellow-over-white stern light
11-58.
What is the daytime signal for a towing vessel
restricted in her movement?
1.
2.
3.
4.
BALL-DIAMOND-BALL
DIAMOND-BALL-DIAMOND
BALL-DIAMOND-BALL and a
DIAMOND
DIAMOND-BALL-DIAMOND and a
BALL
11-59.
You sight a ship showing only its side lights and
two vertically aligned all-around red lights.
What condition of the ship should you report to
the bridge?
1.
It has run aground
2.
It is towing another vessel
3.
It is moored in the channel
4.
It is not under command but making way
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