Navigation Rules Flashcards

Which vessel has the right of way over all other vessels under the Navigation Rules?

Answer: A vessel not under command

A vessel not under command (e.g., with engine failure or steering failure) is at the top of the right-of-way hierarchy because it cannot maneuver.

What does one prolonged blast every two minutes indicate?

Answer: A power-driven vessel underway in restricted visibility

A power-driven vessel making way through the water in restricted visibility sounds one prolonged blast at intervals of not more than two minutes.

What is the sound signal for a vessel at anchor in restricted visibility?

Answer: Rapid ringing of a bell for five seconds every one minute

A vessel at anchor in fog rings a bell rapidly for about five seconds at intervals of not more than one minute.

When a sailing vessel is overtaking a power-driven vessel, which vessel must give way?

Answer: The sailing vessel because it is the overtaking vessel

The overtaking vessel — regardless of type — is always the give-way vessel; the vessel being overtaken is the stand-on vessel.

What lights must a power-driven vessel under 12 meters exhibit at night when underway?

Answer: All-around white light and sidelights

A power-driven vessel less than 12 meters may exhibit an all-round white light and sidelights instead of the full masthead/stern combination.

Which of the following is a 'give-way' vessel in a crossing situation involving a sailing vessel and a power-driven vessel?

Answer: The power-driven vessel

A power-driven vessel must give way to a sailing vessel in a crossing situation, as sailing vessels rank higher in the right-of-way hierarchy.

What is the purpose of the sternlight on a vessel?

Answer: To warn boats approaching from the rear

The sternlight (white, showing 135°) warns vessels approaching from behind that they are entering the overtaking zone.