OUPV sound and light signals 2025/2026 Exam
Questions and Verified Answers | Already Graded
A+
1.whistle means: any sound signaling appliance capable of producing the prescribed blasts
andcomplies with specs in annex III
2.A "short blast" on the whistle has a duration of: 1 second
3.Prolonged blast duration: 4 to 6 seconds
4.Vessel of 12 meters or more shall be equip with: a whistle
5.on a vessel of 20 meters or more: bell and a whistle
6. vessel of 100 meters of more: bell, whistle, gong, tone and sound that can't be confused with the bell
7.vessel less than 12 meters: not obliged to carry sound signaling devices, but should be
provided with other means of making sound
8.one short blast or flash: I am altering my course to starboard
9.two short blasts or flashes: I am altering my course to port
10.three short blasts of flashes: I am operating astern propulsion/ I am backing up
11. duration of flashes and interval: 1 second and 1 second.interval between successive signals shall
be not less than 10 seconds
12. when in sight of one another in a narrow channel or fairway intending to overtake on starboard:
two prolonged blasts then one short blast
13.narrow overtake in sight on port side: two prolonged blasts then two short blasts
14.light used for signals shall be: all-round white light, visible at a minimum 5 miles
15. vessel about to be overtaken shall signal agreement by: whistling one prolonged, one short, one
prolonged, one shortblast
16. if any doubt of sufficient action taken to avoid collision: 5 short rapid blasts on the whistle or
same light signal
17. vessel nearing a bend: one prolonged warning blast, canbe answerd with the same one long
prolinged blast
18. intrnat vs inland meeting and crossing: international- altering course, no answer to these
signals
inland- leave you in my ____ side , answer requires same signal
19.inter vs inland overtaking: inter- no signal for overtaking
inland- one short starboard two short port
20.inter vs inland narrow channel narrow channel: no narrow channel rule inland
Questions and Verified Answers | Already Graded
A+
1.whistle means: any sound signaling appliance capable of producing the prescribed blasts
andcomplies with specs in annex III
2.A "short blast" on the whistle has a duration of: 1 second
3.Prolonged blast duration: 4 to 6 seconds
4.Vessel of 12 meters or more shall be equip with: a whistle
5.on a vessel of 20 meters or more: bell and a whistle
6. vessel of 100 meters of more: bell, whistle, gong, tone and sound that can't be confused with the bell
7.vessel less than 12 meters: not obliged to carry sound signaling devices, but should be
provided with other means of making sound
8.one short blast or flash: I am altering my course to starboard
9.two short blasts or flashes: I am altering my course to port
10.three short blasts of flashes: I am operating astern propulsion/ I am backing up
11. duration of flashes and interval: 1 second and 1 second.interval between successive signals shall
be not less than 10 seconds
12. when in sight of one another in a narrow channel or fairway intending to overtake on starboard:
two prolonged blasts then one short blast
13.narrow overtake in sight on port side: two prolonged blasts then two short blasts
14.light used for signals shall be: all-round white light, visible at a minimum 5 miles
15. vessel about to be overtaken shall signal agreement by: whistling one prolonged, one short, one
prolonged, one shortblast
16. if any doubt of sufficient action taken to avoid collision: 5 short rapid blasts on the whistle or
same light signal
17. vessel nearing a bend: one prolonged warning blast, canbe answerd with the same one long
prolinged blast
18. intrnat vs inland meeting and crossing: international- altering course, no answer to these
signals
inland- leave you in my ____ side , answer requires same signal
19.inter vs inland overtaking: inter- no signal for overtaking
inland- one short starboard two short port
20.inter vs inland narrow channel narrow channel: no narrow channel rule inland
