Good Visibility Flashcards
What is the primary purpose of the International Regulations for Preventing Collisions at Sea (COLREGs)?
To prevent collisions between vessels at sea.
True or False: COLREGs apply to all vessels on the high seas.
True
What does the term ‘stand-on vessel’ refer to?
The vessel that is required to maintain its course and speed in a crossing situation.
Fill in the blank: A vessel that is required to give way is known as a __________ vessel.
give-way
What is the meaning of a single white light displayed by a vessel?
It indicates a vessel under way.
What shape is displayed by a vessel that is anchored?
A single black ball.
Which vessels are required to exhibit a masthead light?
All power-driven vessels under way.
Identify the day shape for a vessel restricted in its ability to maneuver.
Three shapes in a vertical line: a ball, a diamond, and another ball.
What color are the sidelights of a vessel?
Red for port and green for starboard.
True or False: A sailing vessel under sail must show a white light at the top of its mast.
True
What does a flashing light indicate on a vessel?
It typically indicates a vessel engaged in fishing.
What is the day shape displayed by a vessel engaged in fishing?
Two cones, apex to apex.
In a crossing situation, which vessel must give way if both are under power?
The vessel on the operator’s port side.
What is the significance of the term ‘navigational lights’?
They are lights displayed by vessels to indicate their status and direction.
What does a vessel displaying a red flag signify?
It indicates a vessel engaged in diving operations.
What shape does a vessel towing another vessel display?
A diamond shape.
What is the required light configuration for a vessel under sail and also using an engine?
It must show a white light at the top of the mast and sidelights.
True or False: A vessel aground must display three red lights in a vertical line.
True
What does a vessel show when it is not under command?
Two black balls in a vertical line.
What does the term ‘crossing situation’ mean in maritime navigation?
A situation where two vessels are on a collision course.
What is the appropriate action for a give-way vessel?
To take early and substantial action to avoid collision.
What is the day shape for a vessel engaged in fishing with gear restricting its ability to maneuver?
Two cones, apex to apex, with a ball above.
Identify the light configuration for a sailing vessel under power.
A white light at the top of the mast, sidelights, and a stern light.
What is the significance of the term ‘safe speed’?
It refers to the speed at which a vessel can take proper and effective action to avoid collision.
