Traffic Laws & Regulations Flashcards
7 cards from real OBS practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Traffic Laws & Regulations flashcards as text
Which vessel has the right of way over all others under the Navigation Rules?
Answer: A vessel not under command
A vessel not under command (unable to maneuver) has the highest right-of-way priority because it cannot take action to avoid collision.
What do five or more short blasts on a horn or whistle mean?
Answer: Danger or doubt about the other vessel's intentions
Five or more short blasts is the danger or doubt signal indicating the operator is uncertain of the other vessel's intentions.
A motorboat is required to display which lights when operating between sunset and sunrise?
Answer: Red port light, green starboard light, and white stern light
Motorboats under 39.4 feet must display red (port), green (starboard), and white stern lights at night.
When must a vessel give way to a vessel being overtaken?
Answer: Always โ the vessel being overtaken is the stand-on vessel
The vessel being overtaken always has the right of way; the overtaking vessel must keep clear until completely past and clear.
What is a 'no-wake zone' and what speed is typically required?
Answer: A zone where vessels must travel slowly enough to produce no wake, usually under 5 mph
No-wake zones require vessels to travel at the minimum speed needed to maintain steerage, typically under 5 mph, to prevent wake damage.
Which of these vessels must give way to a sailing vessel under sail alone?
Answer: A powerboat under engine power
A power-driven vessel must give way to a sailing vessel under sail alone, as sailboats are considered less maneuverable.
Under U.S. law, how close to a U.S. Navy vessel may a recreational boat approach?
Answer: 100 yards
Federal law prohibits recreational vessels from coming within 100 yards of U.S. Navy ships to ensure security.