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Question 1
BOTH INTERNATIONAL AND INLAND: When towing a barge astern, a power-driven vessel
shall exhibit which of the following in addition to her normal navigation lights?
A) Two towing lights in a vertical line
B) A yellow towing light in a vertical line above the sternlight
C) A special flashing light on the stern
D) Two masthead lights in a vertical line
E) A single all-round yellow light
Correct Answer: B) A yellow towing light in a vertical line above the sternlight
Rationale: According to Rule 24(a)(iv), a power-driven vessel when towing astern shall
exhibit a towing light in a vertical line above the sternlight. A towing light is defined as a
yellow light having the same characteristics as a sternlight.
Question 2
BOTH INTERNATIONAL AND INLAND: According to the rules, is a sailing vessel underway
automatically considered a "vessel restricted in her ability to maneuver"?
A) Yes, because she depends on wind
B) No, unless she is also engaged in a specific task like cable laying
C) Only if she is over 20 meters in length
D) Only when she is in a narrow channel
E) Only during the hours of darkness
Correct Answer: B) No, unless she is also engaged in a specific task like cable laying
Rationale: Rule 3(g) defines "vessel restricted in her ability to maneuver" based on the
nature of her work (e.g., dredging, surveying, underwater ops). A sailing vessel is not RAM
simply because she is under sail.
Question 3
BOTH INTERNATIONAL AND INLAND: All underway restricted visibility signals for power-
driven vessels shall be sounded at intervals of:
A) Not longer than 1 minute
B) Exactly 3 minutes
C) Not longer than 2 minutes
D) Not longer than 5 minutes
E) Every 30 seconds
Correct Answer: C) Not longer than 2 minutes
Rationale: Rule 35(a) and (b) state that power-driven vessels underway in restricted
visibility must sound their fog signals at intervals of not more than 2 minutes.
Question 4
BOTH INTERNATIONAL AND INLAND: Which signal is a recognized distress signal
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according to the rules?
A) A green star shell
B) A smoke signal giving off orange-colored smoke
C) A flashing yellow light
D) A whistle signal of one prolonged blast
E) A black ball displayed in the rigging
Correct Answer: B) A smoke signal giving off orange-colored smoke
Rationale: Annex IV of the Rules of the Road lists an orange-colored smoke signal as an
official distress signal used to indicate distress and need of assistance.
Question 5
INLAND ONLY: Public safety activities carried out by a commercial or government vessel may
display which light configuration?
A) Flashing blue lights
B) Alternating flashing red and yellow lights
C) A steady green light
D) Two flashing white lights
E) Alternating flashing blue and red lights
Correct Answer: B) Alternating flashing red and yellow lights
Rationale: Inland Rule 1(h) and related regulations (33 CFR 88.05) specify that vessels
engaged in government-sanctioned public safety activities may exhibit an alternating
flashing red and yellow light.
Question 6
BOTH INTERNATIONAL AND INLAND: Which of the following is a recognized distress
signal?
A) Raising and lowering a square flag
B) Flames on deck in a barrel or drum
C) Sounding a horn at 5-minute intervals
D) A white flare fired every hour
E) A yellow flag with a black circle
Correct Answer: B) Flames on deck in a barrel or drum
Rationale: Annex IV (Distress Signals) lists "flames on the vessel (as from a burning tar
barrel, oil barrel, etc.)" as a recognized signal of distress.
Question 7
BOTH INTERNATIONAL AND INLAND: At night, you see a vessel underway showing white
over red lights crossing your stern. This indicates the vessel is:
A) Engaged in trawling
B) On pilotage duty
C) Restricted in her ability to maneuver
D) Not under command
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E) A sailing vessel
Correct Answer: B) On pilotage duty
Rationale: Rule 29(a)(i) requires a vessel engaged in pilotage duty to exhibit two all-round
lights in a vertical line, the upper being white and the lower red (White over Red, Pilot
Ahead).
Question 8
INLAND ONLY: A vessel nearing a bend in a narrow channel where other vessels may be
obscured by an obstruction shall sound:
A) One short blast
B) Two short blasts
C) One prolonged blast
D) Three short blasts
E) One prolonged followed by two short blasts
Correct Answer: C) One prolonged blast
Rationale: Rule 34(e) requires that a vessel nearing a bend or an area of a channel where
other vessels may be obscured by an intervening obstruction shall sound one prolonged
blast.
Question 9
INLAND ONLY: In restricted visibility, a towed vessel (or the last vessel of the tow if manned)
shall sound which signal at intervals of not more than two minutes?
A) One prolonged and two short blasts
B) One prolonged and three short blasts
C) Two prolonged and one short blast
D) Four short blasts
E) Five short blasts
Correct Answer: B) One prolonged and three short blasts
Rationale: Rule 35(h) states that a vessel towed (or the last vessel if more than one is towed),
if manned, shall at intervals of not more than 2 minutes sound four blasts in succession: one
prolonged followed by three short.
Question 10
INLAND ONLY: A sailing vessel is meeting a 20-meter power-driven vessel in open water. Who
shall keep out of the way?
A) The sailing vessel
B) The power-driven vessel
C) Both vessels must turn to starboard
D) The vessel that has the other on her port side
E) The faster vessel
Correct Answer: B) The power-driven vessel