rule 34

What signals should a power-driven vessel underway make when maneuvering is authorized or required by the rules?

• One short blast

• Two short blasts

• Two long blasts

• One long blast

What does one short blast on a whistle indicate?

• No maneuvering required

• Altering to starboard

• Altering to port

• Operating astern propulsion

In a crossing situation, if a vessel needs to alter course to starboard, how many short blasts should it sound on the whistle?

• Three

• Four

• Two

• One

What does two short blasts on a whistle indicate?

• Operating astern propulsion

• No maneuvering required

• Altering to starboard

• Altering to port

When vessels are approaching each other and one is unsure of the other's intentions, how many short rapid blasts should be given on the whistle?

• Three

• Six

• Four

• Five

What does one prolonged blast on a whistle indicate when a vessel is nearing a bend or an area where other vessels may be obscured?

• Proceed with caution

• Vessel in distress

• Clear passage

• Uncertain situation

If whistles on a vessel are more than 100 meters apart, how many base whistles should be used for giving maneuvering and warning signals?

• Four

• Three

• Two

• One

What does three short blasts on a whistle indicate?

• Altering to port

• No maneuvering required

• Altering to starboard

• Operating astern propulsion

In a narrow channel or fairway, what signals should be given to indicate overtaking on the starboard side?

• One prolonged blast followed by one short blast

• One short blast followed by one prolonged blast

• Two short blasts followed by one prolonged blast

• Two prolonged blasts followed by one short blast

What does two flashes of light signals indicate when supplementing whistle signals?

• Altering to port

• Altering to starboard

• No maneuvering required

• Operating astern propulsion