OUPV Lights and Sound Exam
Prep 2025 Questions and Answers
NUC (night, day) - ✔✔Red /red , side lights and a stern light; Ball/Ball
RAM (night /day) - ✔✔red /white/red (no side lights when underway);
ball/diamond/ball
RAM (night/day; safe side) - ✔✔green/green; diamond/diamond
RAM (night/day; danger side) - ✔✔red/red; ball /ball
CBD (night/ day) - ✔✔red/red/red; cylinder
Fishing (night/ day) - ✔✔red/ white; hourglass
Fishing (gear out >150m this side) - ✔✔white; triangle
Fishing (Trawing) - ✔✔green/white; hourglass
Sailing (night / day); <7m - ✔✔red/green; upsidedown triangle; sailing vessel <7m or
vessel under oars may use flashlight as latern
mine clearance - ✔✔stand clear 1,000m all around
pilot (night/ day) - ✔✔white/red; "hotel" flag
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,aground (night/ day); all vessels; <50m; <12m)+ - ✔✔red/red; ball/ball/ball (All
vessels: 2 red and 2 white all-around lights; <50m one white light instead of 2; <12m
exempt)
anchored (day/ night); <50m; <100m; >100m - ✔✔all-around white light; one ball
(<50m= 1 all-around white light; <100m=2 all-around white light; >100m also illuminate
decks)
Navigation lights - ✔✔<12m: include all-round white light and red and green
sidelights; <7m: 1 all-around white light
Naviagtion Lights (<20m) - ✔✔1 stern light (135 degrees); 1 masthead light (225
degrees); red and green side lights
Navigation Lights (>20<50m) - ✔✔1 stern light (135 degrees); 1 masthead light (225
degrees); red and green side lights (not combined)
Naviagtion Lights (>50m) - ✔✔1 stern light (135 degrees); 2 masthead light (225
degrees); red and green side lights (not combined)
Towing <200m astern - ✔✔2 masthead (225 degrees) lights
Towing >200m astern - ✔✔3 masthead (225 degree) lights
International: 1 short blast - ✔✔Altering my course to starboard
International: 2 short blasts - ✔✔Altering my course to port
International: 3 short blasts - ✔✔operating astern propulsion
International: 5 short blasts - ✔✔Warning/ doubt; Overtaken: No (may)
International: 1 prolonged blast - ✔✔nearing an obscured bend
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, International: 2 prolonged blasts, 1 short blast - ✔✔Overtaking; I intend to leave you on
your starboard side
International: 2 prolonged blasts, 2 short blast - ✔✔Overtaking; I intend to leave you on
your port side
International: 1 prolonged blast, 1 short blast, 1 prolonged blast, 1 short blast -
✔✔Overtaken; Yes (shall)
International: 1 prolonged blast @ 2minute interval - ✔✔restricted visibility; power
driven vessel
International: 2 prolonged blasts @ 2minute interval - ✔✔restricted visibility; power
driven vessel underway, not making way
International: 1 prolonged blast and 2 short blasts @ 2minute interval - ✔✔restricted
visibility; all handicapped vessels: NUC,RAM,CBD,F,S,T
International: 1 prolonged blast and 3 short blasts @ 2minute interval - ✔✔restricted
visibility; being towed if manned (last vessel in tow)
International: 4 short blasts @ 2minute interval - ✔✔restricted visibility; pilot
identification signal
International: rapid ringing of bell for 5 sec @ 1minute interval - ✔✔restricted visibility;
Vessel anchored: 20m < 100m in length
International: 1 short one prolonged and one short blast @ 1minute interval -
✔✔restricted visibility; warning of possible collision by anchored vessel
International: 5 sec bell forward then 5 sec Gong aft @ 1minute interval - ✔✔restricted
visibility; Vessel anchored: > 100m in length
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
Prep 2025 Questions and Answers
NUC (night, day) - ✔✔Red /red , side lights and a stern light; Ball/Ball
RAM (night /day) - ✔✔red /white/red (no side lights when underway);
ball/diamond/ball
RAM (night/day; safe side) - ✔✔green/green; diamond/diamond
RAM (night/day; danger side) - ✔✔red/red; ball /ball
CBD (night/ day) - ✔✔red/red/red; cylinder
Fishing (night/ day) - ✔✔red/ white; hourglass
Fishing (gear out >150m this side) - ✔✔white; triangle
Fishing (Trawing) - ✔✔green/white; hourglass
Sailing (night / day); <7m - ✔✔red/green; upsidedown triangle; sailing vessel <7m or
vessel under oars may use flashlight as latern
mine clearance - ✔✔stand clear 1,000m all around
pilot (night/ day) - ✔✔white/red; "hotel" flag
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,aground (night/ day); all vessels; <50m; <12m)+ - ✔✔red/red; ball/ball/ball (All
vessels: 2 red and 2 white all-around lights; <50m one white light instead of 2; <12m
exempt)
anchored (day/ night); <50m; <100m; >100m - ✔✔all-around white light; one ball
(<50m= 1 all-around white light; <100m=2 all-around white light; >100m also illuminate
decks)
Navigation lights - ✔✔<12m: include all-round white light and red and green
sidelights; <7m: 1 all-around white light
Naviagtion Lights (<20m) - ✔✔1 stern light (135 degrees); 1 masthead light (225
degrees); red and green side lights
Navigation Lights (>20<50m) - ✔✔1 stern light (135 degrees); 1 masthead light (225
degrees); red and green side lights (not combined)
Naviagtion Lights (>50m) - ✔✔1 stern light (135 degrees); 2 masthead light (225
degrees); red and green side lights (not combined)
Towing <200m astern - ✔✔2 masthead (225 degrees) lights
Towing >200m astern - ✔✔3 masthead (225 degree) lights
International: 1 short blast - ✔✔Altering my course to starboard
International: 2 short blasts - ✔✔Altering my course to port
International: 3 short blasts - ✔✔operating astern propulsion
International: 5 short blasts - ✔✔Warning/ doubt; Overtaken: No (may)
International: 1 prolonged blast - ✔✔nearing an obscured bend
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
, International: 2 prolonged blasts, 1 short blast - ✔✔Overtaking; I intend to leave you on
your starboard side
International: 2 prolonged blasts, 2 short blast - ✔✔Overtaking; I intend to leave you on
your port side
International: 1 prolonged blast, 1 short blast, 1 prolonged blast, 1 short blast -
✔✔Overtaken; Yes (shall)
International: 1 prolonged blast @ 2minute interval - ✔✔restricted visibility; power
driven vessel
International: 2 prolonged blasts @ 2minute interval - ✔✔restricted visibility; power
driven vessel underway, not making way
International: 1 prolonged blast and 2 short blasts @ 2minute interval - ✔✔restricted
visibility; all handicapped vessels: NUC,RAM,CBD,F,S,T
International: 1 prolonged blast and 3 short blasts @ 2minute interval - ✔✔restricted
visibility; being towed if manned (last vessel in tow)
International: 4 short blasts @ 2minute interval - ✔✔restricted visibility; pilot
identification signal
International: rapid ringing of bell for 5 sec @ 1minute interval - ✔✔restricted visibility;
Vessel anchored: 20m < 100m in length
International: 1 short one prolonged and one short blast @ 1minute interval -
✔✔restricted visibility; warning of possible collision by anchored vessel
International: 5 sec bell forward then 5 sec Gong aft @ 1minute interval - ✔✔restricted
visibility; Vessel anchored: > 100m in length
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
