1. NAVIGATION RULES Sound Light Signals and Inland COMO Lew Wargo
CQEC (9ER)
01 APR 2015
NAV RULES SOUND & LIGHT SIGNALS

2. International - Inland
REFERENCES
Navigation Rules
International - Inland
COMDTINST M (series)

3. SOUND & LIGHT SIGNALS
What size vessel must carry both a whistle and a bell?
A. Equal or more than 7 meters
B. Equal or more than 10 meters
C. Equal or more than 12 meters
D. Equal or more than 20 meters.

4. SOUND & LIGHT SIGNALS
What size vessel must carry both a whistle and a bell?
A. Equal to or more than 7 meters.
B. Equal to or more than 10 meters.
C. Equal to or more than 12 meters.
D. Equal to or more than 20 meters.

5. SOUND & LIGHT SIGNALS
When power driven vessels are in sight of one another and meeting or crossing they must signal if within what distance?
A yards
B yards
C. ½ mile
D. 1 mile

6. SOUND & LIGHT SIGNALS
When power driven vessels are in sight of one another and meeting or crossing they must signal if within what distance?
A yards
B yards
C. ½ mile
D. 1 mile

7. SOUND & LIGHT SIGNALS
Which of the following whistle signal is correct?
A. One short blast means I am altering course to port and will leave you on my starboard side.
B. Two short blasts means I am altering course to starboard and will leave you on my port side.
C. One short blast means I am altering course to starboard and will leave you on my port side.
D. Three short blasts is a danger signal.

8. SOUND & LIGHT SIGNALS
Which of the following whistle signal is correct?
A. One short blast means I am altering course to port and will leave you on my starboard side.
B. Two short blasts means I am altering course to starboard and will leave you on my port side.
C. One short blast means I am altering course to starboard and will leave you on my port side.
D. Three short blasts is a danger signal.

9. SOUND & LIGHT SIGNALS Three short blasts on a whistle means:
A. I am at anchor
B. I am aground
C. Danger
D. My engines are in astern propulsion

10. SOUND & LIGHT SIGNALS Three short blasts on a whistle means:
A. I am at anchor
B. I am aground
C. Danger
D. My engines are in astern propulsion

11. SOUND & LIGHT SIGNALS The danger signal on a whistle is:
A. Three short blasts
B. Four short blasts
C. Five or more short blasts
D. None of the above

12. SOUND & LIGHT SIGNALS The danger signal on a whistle is:
A. Three short blasts
B. Four short blasts
C. Five or more short blasts
D. None of the above

13. SOUND & LIGHT SIGNALS A light used to supplement whistle signals is:
A. An all-round white
B. An all-round yellow
C. A light with a range of 2 miles
D. May be either an all-round white or yellow light with a range of 2 miles.

14. SOUND & LIGHT SIGNALS A light used to supplement whistle signals is:
A. An all-round white
B. An all-round yellow
C. Light with a range of 2 miles
D. May be either an all-round white or yellow light with a range of 2 miles.

15. SOUND & LIGHT SIGNALS
What signal does a vessel give when nearing a bend in a narrow channel?
A. One prolonged blast
B. Three short blasts
C. Four short blasts
D. Five short blasts

16. SOUND & LIGHT SIGNALS
What signal does a vessel give when nearing a bend in a narrow channel?
A. One prolonged blast
B. Three short blasts
C. Four short blasts
D. Five short blasts

17. SOUND & LIGHT SIGNALS
A vessel leaving a dock or berth, shall give what signal on her whistle?
A. One prolonged blast
B. One short blast
C. four short blasts
D. Five short blasts

18. SOUND & LIGHT SIGNALS
A vessel leaving a dock or berth, shall give what signal on her whistle?
A. One prolonged blast
B. One short blast
C. four short blasts
D. Five short blasts

19. SOUND & LIGHT SIGNALS
If a vessel does not understand the signal from another vessel, she should answer with:
A. The same signal
B. Three short blasts
C. Four short blasts
D. Five or more short blasts

20. SOUND & LIGHT SIGNALS
If a vessel does not understand the signal from another vessel, she should answer with:
A. The same signal
B. Three short blasts
C. Four short blasts
D. Five or more short blasts

21. SOUND & LIGHT SIGNALS
A power driven vessel making way in restricted visibility sounds:
A. One prolonged blast at least once every 2 minutes
B. Three short blasts at least once every 2 minutes
C. The danger signal at least once every two minutes
D. One prolonged blast at least once every minute

22. SOUND & LIGHT SIGNALS
A power driven vessel making way in restricted visibility sounds:
A. One prolonged blast at least once every 2 minutes
B. Three short blasts at least once every 2 minutes
C. The danger signal at least once every two minutes
D. One prolonged blast at least once every minute

23. SOUND & LIGHT SIGNALS
If in restricted visibility you hear 1 prolonged and 2 short blasts followed by 1 prolonged and 3 short blasts you are hearing the signal of:
A. A sailboat under way, making way
B. A vessel restricted in its maneuverability
C. A vessel towing and the tow
D. A vessel not under command

24. SOUND & LIGHT SIGNALS
If in restricted visibility you hear 1 prolonged and 2 short blasts followed by 1 prolonged and 3 short blasts you are hearing the signal of:
A. A sailboat under way, making way
B. A vessel restricted in its maneuverability
C. A vessel towing and the tow
D. A vessel not under command

25. SOUND & LIGHT SIGNALS
One prolonged and two short is a whistle signal used at least once every 2 minutes by:
A. A vessel towing
B. A sailboat operating under sail power
C. A vessel restricted in ability to maneuver or not under command
D. All of the above

26. SOUND & LIGHT SIGNALS
One prolonged and two short is a whistle signal used at least once every 2 minutes by:
A. A vessel towing
B. A sailboat operating under sail power
C. A vessel restricted in ability to maneuver or not under command
D. All of the above

27. SOUND & LIGHT SIGNALS
A vessel over 12 meters in length, at anchor must sound what sound signal at least every minute:
A. A rapid ringing of a bell for 5 seconds
B. A sounding of a gong for 5 seconds
C. A rapid ringing of a bell and five short whistle blasts
D. None of the above

28. SOUND & LIGHT SIGNALS
A vessel over12 meters in length, at anchor must sound what sound signal at least every minute:
A. A rapid ringing of a bell for 5 seconds
B. A sounding of a gong for 5 seconds
C. A rapid ringing of a bell and five short whistle blasts
D. None of the above

29. SOUND & LIGHT SIGNALS
What whistle signal may be used to augment the anchor signal:
A. five short
B. Four short
C. A short, a prolonged and a short
D. One prolonged and two short

30. SOUND & LIGHT SIGNALS
What whistle signal may be used to augment the anchor signal:
A. five short
B. Four short
C. A short, a prolonged and a short
D. One prolonged and two short

31. SOUND & LIGHT SIGNALS
A vessel engaged in pilotage duty in restricted visibility sounds:
A. Three short
B. Four short
C. One prolonged and three short
D. Five short

32. SOUND & LIGHT SIGNALS
A vessel engaged in pilotage duty in restricted visibility sounds:
A. Three short
B. Four short
C. One prolonged and three short
D. Five short

33. SOUND & LIGHT SIGNALS
16. A high intensity white light flashing at a regular interval 50 to 70 times per minute indicates:
A. A tow by an vessel not equipped to tow.
B. A distress signal on International waters only.
C. A distress signal on the Inland Waters only.
D. A distress signal on International and Inland Waters.

34. SOUND & LIGHT SIGNALS
A high intensity white light flashing at a regular
interval 50 to 70 times per minute indicates:
A. A tow by an vessel not equipped to tow.
B. A distress signal on International waters only.
C. A distress signal on the Inland Waters only.
D. A distress signal on International and Inland Waters.

35. SOUND & LIGHT SIGNALS
17. What sound signal must a vessel under 12 meters make if anchored in restricted visibility? A. The rapid ringing of a bell for 5” at least once every minute. B. Any sound signal that can not be confuse with another sound signal. C. The rapid ringing of a bell at least once every 2 minutes. D. Five or more short blasts at least once every minute.

36. SOUND & LIGHT SIGNALS
17. What sound signal must a vessel under 12 meters
make if anchored in restricted visibility?
A. The rapid ringing of a bell for 5” at least once every minute.
B. Any sound signal that can not be confused with another sound signal.
C. The rapid ringing of a bell at least once every 2 minutes.
D. Five or more short blasts at least once every minute.

37. SOUND & LIGHT SIGNALS
If in restricted visibility you hear a whistle signal consisting of 1 short, 1 prolonged and 1 short blast, you are hearing:
A. A vessel drifting.
B. A vessel making way under power.
C. A vessel in distress.
D. A vessel at anchor.

38. SOUND & LIGHT SIGNALS
If in restricted visibility you hear a whistle signal consisting of 1 short, 1 prolonged and 1 short blast, you are hearing:
A. A vessel drifting.
B. A vessel making way under power.
C. A vessel in distress.
D. A vessel at anchor.

39. SOUND & LIGHT SIGNALS
If in restricted visibility, you hear a rapid ringing of a bell followed by three distinct strokes of the bell, you are hearing:
A. A vessel over 100 meters at anchor.
B. A vessel over 12 meters at anchor.
C. A vessel aground.
D. None of the above.

40. SOUND & LIGHT SIGNALS
If in restricted visibility, you hear a rapid ringing of a bell followed by three distinct strokes of the bell, you are hearing:
A. A vessel over 100 meters at anchor.
B. A vessel over 12 meters at anchor.
C. A vessel aground.
D. None of the above.

41. SOUND & LIGHT SIGNALS
Which of the following frequency ranges is correct for a vessel’s signal whistle:
A HZ for vessels less than 75 meters.
B Hz for vessels over 75 meters.
C. None of the above.
D. All of the above.

42. SOUND & LIGHT SIGNALS
Which of the following frequency ranges is correct for a vessel’s signal whistle:
A Hz for vessels less than 75 meters.
B Hz for vessels over 75 meters.
C. None of the above.
D. All of the above.