Lights and Dayshapes Flashcards
BOTH INTERNATIONAL & INLAND According to the Rules, which vessel MUST show two masthead lights in a vertical line?
A power-driven vessel less than 50 meters in length with a 20-meter tow
BOTH INTERNATIONAL & INLAND A vessel showing a green light over a white light in a vertical line above the level of the sidelights is…
Trawling
INTERNATIONAL ONLY If a vessel displays three all-round red lights in a vertical line at night, during the day she may show…
A cylinder
BOTH INTERNATIONAL & INLAND Barges being towed at night must exhibit navigation lights…
At all times
BOTH INTERNATIONAL & INLAND A power-driven vessel exhibits the same lights as a…
Pushing vessel and a vessel being pushed, when they are in a composite unit
BOTH INTERNATIONAL & INLAND You are approaching another vessel at night. You can see both red and green sidelights and, above the level of the sidelights, three white lights in a vertical line. The vessel may be ___________________.
towing a tow more than 200 meters astern
BOTH INTERNATIONAL & INLAND What is the minimum length of an anchored vessel which is required to show a white light both forward and aft?
50 meters
BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel under oars?
She is allowed to show the same lights as a sailing vessel
BOTH INTERNATIONAL & INLAND What is used to show the presence of a partly submerged object being towed?
A searchlight from the towing vessel in the direction of the tow
BOTH INTERNATIONAL & INLAND What signal would a vessel aground show during daylight?
Three black balls in a vertical line
BOTH INTERNATIONAL & INLAND An inconspicuous, partly submerged vessel or object is being towed, where the length of the tow is 100 meters, shall show ________________.
a diamond shape
BOTH INTERNATIONAL & INLAND The lights prescribed by the Rules shall be exhibited ________________________
from sunrise to sunset in restricted visibility
BOTH INTERNATIONAL & INLAND Which vessel MUST show two masthead lights in a vertical line?
A power-driven vessel less than 50 meters in length with a 20-meter tow
BOTH INTERNATIONAL & INLAND What lights must be shown on a barge being towed astern at night?
Sidelights and a sternlight
INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line at night and a black cylinder dayshape is…
Constrained by her draft
BOTH INTERNATIONAL & INLAND A lantern combining a vessel’s side lights may be shown on a…
15-meter sailing vessel
BOTH INTERNATIONAL & INLAND A “flashing light”, by the definition given in the rules, is a light that…
Flashes at regular intervals at a frequency of 120 flashes or more per minute
BOTH INTERNATIONAL & INLAND A white masthead light shows through an arc of how many degrees?
225 degrees
BOTH INTERNATIONAL & INLAND Which Lights must sailboats show when underway at night?
Red and green sidelights and a sternlight
BOTH INTERNATIONAL & INLAND A towing vessel 35 meters in length, with a tow 100 meters astern, must show a minimum of how many masthead lights?
two
BOTH INTERNATIONAL & INLAND A 22-meter sailing vessel when also being propelled by machinery shall show during daylight hours a…
A conical shape, apex downwards
BOTH INTERNATIONAL & INLAND The sternlight shall be positioned such that it will show from dead astern to how many degrees on each side of the stern of the vessel?
67.5 degrees
BOTH INTERNATIONAL & INLAND Which lights would be shown at night by a vessel which is restricted in her ability to deviate from her course?
Three lights in a vertical line, the highest and lowest red and the middle white
BOTH INTERNATIONAL & INLAND A towing light is a yellow light having the same characteristics as a __________________________.
Sternlight
