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Sample BD Deck Officer Class 3 (OOW) Practice Questions
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1Under Rule 3 of COLREG, which of the following is included in the definition of a "vessel"?
A.Only mechanically self-propelled ships
B.Every description of watercraft, including non-displacement craft and seaplanes, used or capable of being used as a means of transportation on water
C.Only vessels over 500 gross tonnage
D.Only vessels engaged in international voyages
Explanation: Rule 3(a) of COLREG defines "vessel" broadly to include every description of watercraft, including non-displacement craft, WIG craft, and seaplanes, used or capable of being used as a means of transportation on water. This broad wording ensures the Rules apply to almost anything that transits on the water surface.
2According to Rule 9 (Narrow Channels), a vessel of less than 20 metres in length or a sailing vessel navigating in a narrow channel shall:
A.Have right of way over all power-driven vessels
B.Not impede the passage of a vessel that can safely navigate only within the channel
C.Always overtake on the port side
D.Anchor immediately if traffic density increases
Explanation: Rule 9(b) states that a vessel of less than 20 metres in length or a sailing vessel shall not impede the passage of a vessel which can safely navigate only within a narrow channel or fairway, since larger deep-draft vessels have far less room to manoeuvre.
3Under Rule 13, a vessel is deemed to be "overtaking" another when coming up with it from a direction more than how many degrees abaft the other vessel's beam?
A.22.5 degrees
B.45 degrees
C.67.5 degrees
D.90 degrees
Explanation: Rule 13(b) defines overtaking as coming up with another vessel from a direction more than 22.5 degrees abaft her beam — the point at which, at night, only her sternlight (and neither sidelight) would be visible, since the sternlight's 135-degree arc begins exactly there.
4When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision (a head-on situation), Rule 14 requires each to:
A.Maintain course and speed
B.Alter course to starboard so that each shall pass on the port side of the other
C.Alter course to port so that each shall pass on the starboard side of the other
D.Reduce speed and sound five short blasts
Explanation: Rule 14 states that when two power-driven vessels are meeting head-on so as to involve risk of collision, each shall alter her course to starboard so that each passes on the port side of the other — a globally standardized rule that keeps both vessels' turns complementary.
5In a crossing situation between two power-driven vessels where risk of collision exists, Rule 15 requires the vessel that has the other on her own starboard side to:
A.Maintain course and speed as the stand-on vessel
B.Keep out of the way and, if circumstances allow, avoid crossing ahead of the other vessel
C.Sound one short blast and hold her course
D.Alter course to port to pass astern-first
Explanation: Rule 15 makes the vessel that has another vessel on her own starboard side the give-way vessel; she must keep out of the way and, where possible, avoid crossing ahead of the other vessel, typically by turning to pass astern of her.
6Rule 5 (Look-out) requires every vessel to maintain a proper look-out primarily by:
A.Radar alone, regardless of conditions
B.Sight and hearing as well as all available means appropriate to the prevailing circumstances and conditions
C.VHF radio monitoring only
D.The master personally, at all times
Explanation: Rule 5 requires every vessel at all times to maintain a proper look-out by sight and hearing as well as by all available means appropriate to the prevailing circumstances and conditions, so as to make a full appraisal of the situation and risk of collision.
7Which factor is explicitly listed in Rule 6 for determining a vessel's "safe speed"?
A.The vessel's insured value
B.The state of visibility
C.The number of passengers on board
D.The nationality of the vessel's flag
Explanation: Rule 6 lists factors such as the state of visibility, traffic density, the vessel's manoeuvrability (stopping distance and turning ability), and the state of wind, sea, current, and proximity of navigational hazards as elements every vessel must take into account when determining a safe speed.
8In restricted visibility, Rule 19 requires a power-driven vessel to have her engines ready for immediate manoeuvre and to proceed at:
A.Full sea speed to clear the area quickly
B.A safe speed adapted to the prevailing circumstances and conditions of restricted visibility
C.Anchor immediately regardless of depth
D.The maximum speed permitted by her class certificate
Explanation: Rule 19(b) requires every vessel to proceed at a safe speed adapted to the prevailing circumstances and conditions of restricted visibility, and a power-driven vessel must additionally have her engines ready for immediate manoeuvre.
9Rule 19(d) states that a vessel detecting by radar alone the presence of another vessel forward of her beam, and determining a close-quarters situation is developing, shall avoid, so far as possible, an alteration of course consisting of:
A.A reduction of speed
B.An alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken
C.Use of the VHF radio
D.Sounding the fog signal
Explanation: Rule 19(d)(i) directs vessels avoiding a close-quarters situation detected by radar alone to avoid, as far as possible, an alteration of course to port for a vessel forward of the beam (other than one being overtaken), because that manoeuvre could unpredictably bring the vessels closer together.
10In or near an area of restricted visibility, a power-driven vessel making way through the water must sound, at intervals of not more than 2 minutes:
A.Two prolonged blasts
B.One prolonged blast
C.One prolonged blast followed by two short blasts
D.Rapid ringing of the bell for about five seconds
Explanation: Rule 35(a) requires a power-driven vessel making way through the water in or near restricted visibility to sound one prolonged blast at intervals of not more than two minutes.
About the BD Deck Officer Class 3 (OOW) Practice Questions
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