Navigation Rules Flashcards
7 cards from real Boating Certification Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Navigation Rules flashcards as text
What is the arc of visibility for a vessel's green starboard sidelight?
Answer: 112.5 degrees from right ahead to 22.5 degrees abaft the starboard beam
Each sidelight covers 112.5 degrees — from dead ahead to 22.5 degrees abaft the respective beam.
A vessel aground at night, in addition to anchor lights, must show what additional lights?
Answer: Two red lights in a vertical line
A vessel aground displays anchor lights plus two all-round red lights in a vertical line.
What is the rule for vessels navigating in a Traffic Separation Scheme?
Answer: Vessels shall join or leave a traffic lane at the termination of the lane or at as small an angle as practicable
Vessels should enter or exit traffic lanes at the ends or at a shallow angle to minimize disruption to lane traffic.
Which fog signal is made by a vessel at anchor?
Answer: Ringing a bell rapidly for about 5 seconds every minute
An anchored vessel rings its bell rapidly for about 5 seconds at intervals of not more than 1 minute.
Under the Inland Navigation Rules, a power-driven vessel leaving a dock or berth must sound what signal?
Answer: One prolonged blast
A vessel leaving a dock or berth under Inland Rules sounds one prolonged blast to warn nearby traffic.
What is the purpose of a vessel's stern light?
Answer: To be visible to vessels overtaking from astern
The stern light covers 135 degrees centered on the vessel's stern, allowing overtaking vessels to see the vessel ahead.
When may a vessel ignore the rule requiring it to keep to the starboard side of a narrow channel?
Answer: When it is less than 20 meters in length and would be impeded in a different channel
Vessels under 20 meters must not impede vessels that can safely navigate only within a narrow channel.