Sound and Light Signals

Question 1

BOTH INTERNATIONAL & INLAND While underway your vessel enters fog. You stop your engines and the vessel is dead in the water. Which fog signal should you sound?

Answer 1

Two prolonged blasts every two minutes

Question 2

BOTH INTERNATIONAL & INLAND You are underway, in fog, when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate a vessel ______________________.

Answer 2

not under command

Question 3

INTERNATIONAL ONLY You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made. You should…

Answer 3

Hold course and sound no whistle signal

Question 4

BOTH INTERNATIONAL & INLAND Using the danger signal _______________________.

Answer 4

indicates doubt as to another vessels actions

Question 5

BOTH INTERNATIONAL & INLAND Which sound signal indicates doubt that sufficient action is being taken by another vessel to avoid collision?

Answer 5

Five short and rapid blasts of the whistle.

Question 6

BOTH INTERNATIONAL & INLAND while operating a power-driven vessel and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen. You should sound _____________________.

Answer 6

one blast, 4 to 6 seconds in duration

Question 7

INTERNATIONAL ONLY In a narrow channel, a signal of intent, which must be answered by the other vessel, is sounded by a vessel ______________________.

Answer 7

overtaking another

Question 8

BOTH INTERNATIONAL & INLAND The duration of a prolonged blast of the whistle is ____________________.

Answer 8

4 to 6 seconds

Question 9

BOTH INTERNATIONAL & INLAND Each prolonged blast on whistle signals used by a power-driven vessel in restricted visibility, whether making way or underway but not making way, is ____________________.

Answer 9

four to six seconds

Question 10

INTERNATIONAL ONLY A vessel sailing is overtaking a power-driven vessel in a narrow channel, so as to pass on the power-driven vessel’s port side. The overtaken vessel will have to move to facilitate passage. The sailing vessel is the _______________________.

Answer 10

give-way vessel and would sound two prolonged blasts followed by two short blasts

Question 11

BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. You should ____________________.

Answer 11

sound only fog signals until the other vessel is sighted

Question 12

BOTH INTERNATIONAL & INLAND In a crossing situation, which vessel may sound the danger signal?

Answer 12

Either vessel

Question 13

BOTH INTERNATIONAL & INLAND According to the Rules of the Road, A vessel underway and making way in fog shall sound every two minutes _______________.

Answer 13

one prolonged blast

Question 14

BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel sound one prolonged blast followed by two short blasts. What does this signal indicate?

Answer 14

A vessel towing

Question 15

BOTH INTERNATIONAL & INLAND A vessel nearing a bend or an area of a channel or fairway where other vessels may be obscured by an intervening obstruction shall sound _______________________.

Answer 15

one prolonged blast

Question 16

BOTH INTERNATIONAL & INLAND A vessel sounding a fog signal of one short, one prolonged, and one short blast is indicating that the vessel is __________________.

Answer 16

at anchor

Question 17

INTERNATIONAL ONLY In a narrow channel, an overtaking vessel, which intends to PASS on the other vessel’s port side would sound________________.

Answer 17

one short blast

Question 18

BOTH INTERNATIONAL & INLAND Which signal does a power-driven vessel sound when making way in fog?

Answer 18

One prolonged blast every two minutes.

Question 19

BOTH INTERNATIONAL & INLAND A “short blast” has a duration of __________________.

Answer 19

1 second

Question 20

INTERNATIONAL ONLY A vessel underway sounds one short blast. This signal indicates the vessel _______________.

Answer 20

is altering course to starboard