DWATCH 1
Navigational Safety Quiz
Test your knowledge on maritime rules and navigation safety! This quiz covers essential terminology and regulations to help you navigate safely at sea.
Engage with questions about:
- Vessel maneuverability
- Maritime lights and shapes
- Collision avoidance
- Sound signals
It includes any aircraft designed to maneuver on the water.
A. Airplane
C. Seaplane
B. Hover boat
D. Waterplane
It means that a vessel is not at anchor, or made fast to the shore, or aground.
A. Under way
C. Navigating
B. Underway
D. Drifting
It means a vessel which through some exceptional circumstance is unable to maneuver as required by Colregs.
A. NUC
C. NVC
B. VLC
VLC d. RAM
Vessel shall be deemed to be in sight of one another only when one can be observed from the other by what
A. ARPA
C. AIS
B. RADAR
d. Visually
It means any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes.
A. Restricted vision
c. Blurred visibility
B. Restricted visibility
d. Blurred vision
Scanty RADAR information. The word scanty also means.
A. Clear
C. Incomplete
B. Precise
D. Correct
If alteration of course alone is possible to avoid collision, such alteration shall be what?
A. Series of small alteration
C. Made if near the target
B. Large enough
D. No change at all
If alteration of course alone is possible to avoid collision, such alteration shall be what?
A. Series of small alteration
C. Made if near the target
B. Large enough
D. No change at all
Which action is as much as possible avoided in a narrow channel?
A. dredging
C. fishing
B. towing
D. anchoring
Which vessel should not impede the safe passage of a power-driven vessel following a traffic lane?
A. 20m power driven vessel
C. 25m power driven vessel
B. 15m power driven vessel
D. 30m power driven vessel
A vessel shall, so far as practicable, avoid crossing traffic lanes but if obliged to do so shall cross on a heading as nearly as practicable at what angle to the general direction of traffic flow?
A. Small angle
c. Large angle
B. 90-degree angle
D. Any angle
Part C Lights and Shapes of COLREGS is applied only when?
A. In-sight of one another
C. Daytime
B. Nighttime
D. All weathers
Masthead light must show unbroken light over an arc of the horizon of how many degrees.
A. 220 degrees
C. 230 degrees
B. 225 degrees
D. 235 degrees
Flashing light must flash how many flashes of light per minute at regular interval as a minimum.
A. 120
C. 60
B. 110
D. 360
Vessel constrained by their draft must display this shape during daytime.
A. cone
C. cylinder
B. ball
D. diamond
Vessel at anchor must display this shape during daytime.
A. cone
C. cylinder
B. ball
D. diamond
You were ordered to sound a short blast; how many seconds are you going to sound the signal?
A. one
C. three
B. two
D. four
A prolonged blast is a sound signal of how many seconds.
A. 1 to 3
C. 1 to 2
B. 2 to 3
D. 4 to 6
You intend to overtake another vessel on her port side, what signal should you sound?
A. ___ ___ _
c. ___ ___ _ _
B. ___ _
D. ___ _ _
You are the vessel being overtaken, and you agreed to be overtaken, what signal should you sound?
A. ___ _ ___ _
C. _ _ _ _ _
B. ___ _ ___
D. _ ___ _ ___
You are the vessel being overtaken, and you don’t agree to be overtaken, what signal should you sound? Similar causes.
A. ___ _ ___ _
C. _ _ _ _ _
B. ___ _ ___
D. _ ___ _ ___
What risk is deemed to exist if the target’s bearing does not appreciably change?
A. collision
C. Man overboard
B. fire
D. grounding
If alteration of course alone is possible to avoid collision, such alteration shall be what?
A. Series of small alteration
C. Made if near the target
B. Large enough
D. No change at all
Action taken to avoid collision with another vessel shall be such as to result in passing what?
A. Close quarter situation
C. Head on
B. Crossing situation
d. At a safe distance
It means stopping engine or reversing her means of propulsion so as to stop the movement of the ship.
A. Take all way off
C. Take all way on
B. Take all way down
D. Take all ways off
The term vessels restricted in their ability to maneuver shall include vessel engaged in underwater operations.
True
False
Traffic separation schemes may NOT be adopted by the Organization for the purpose of these Rules.
True
False
The term sailing vessel means any vessel under sail provided that propelling machinery, if fitted, is being used.
True
False
The term vessel not under command means a vessel's steering gear system is non-operational.
True
False
The term vessel engaged in fishing means any vessel fishing with trolling lines.
True
False
When both sailing vessels have the wind on the same side, which sailing vessel shall keep out of the way?
A. Leeward side
C. starboard
B. Windward side
D. Side by side
Is Rule 14 head-on situation applicable to all vessels?
True
False
When a vessel is in any doubt as to whether she is overtaking another, she shall assume that she is overtaking and a stand-on vessel.
True
False
If a sailing vessel with the wind on the port side sees a vessel to windward and cannot determine with certainty whether the other vessel has the wind on the port or on the starboard side, what would be her action?
A. Give way
C. Stand on
B. No way
D. Wrong way
An overtaking vessel shall only see what navigational light of the vessel being overtaken
A. Masthead light
C. sidelight
B. Stern light
D. Emergency light
Head on situation exists if you see approaching vessel with two masthead lights in the same vertical line.
True
False
A vessel shall be deemed to be overtaking when coming up with another vessel from a direction more than 21.5 degrees abaft her beam.
True
False
Which vessel shall keep out of the way of the other
A. Overtaking
C. crossing
B. Overtaken
D. anchoring
You were ordered to sound a short blast; how many seconds are you going to sound the signal?
A. one
C. three
B. two
D. four
A prolonged blast is a sound signal of how many seconds.
A. 1 to 3
c. 1 to 2
B. 2 to 3
D. 4 to 6
To avoid close quarter situation, you must alter course toward a vessel abeam or forward of the beam in restricted visibility.
True
False
Sailing vessels must comply with Rule 19 when navigating in restricted visibility.
True
False
In an area of restricted visibility, as an OOW, it is ok NOT to use sound signals
True
False
Safe speed must be adapted to the prevailing circumstances and conditions of restricted visibility even at high seas.
True
False
Every vessel which hears apparently forward of her beam the fog signal of another vessel, shall reduce her speed to the minimum at which she can be kept on course at all times.
True
False
An alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken should be avoided in areas of restricted visibility.
True
False
An alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken should be avoided in areas of restricted visibility.
True
False
Assumptions shall ALWAYS be made on the basis of scanty information, especially scanty radar information.
True
False
Any action taken to avoid collision shall be taken in accordance with the Rules of this Part and shall, be positive, made in ample time and with due regard to the observance of good seamanship.
True
False
If there is sufficient sea room, alteration of course alone may be the most effective action to avoid a close-quarters situation provided that it is made in good time, is substantial and does not result in another _____ situation.
Which vessel should not impede the safe passage of a vessel that can only navigate in a narrow channel?
A. Towing vessel
C. Fishing vessel
B. Pilot vessel
D. Dredging vessel
A vessel of less than _____ meters 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.
A. 20
C. 10
B. 15
D. 30
Any vessel shall avoid anchoring in a narrow channel.
True
False
A vessel nearing a bend or an area of a narrow channel or fairway where other vessels may be obscured by an intervening obstruction shall shall sound one short blast.
True
False
Which vessel should not impede the safe passage of a vessel that can only navigate in a narrow channel?
A. Towing vessel
C sailing vessel
B. Pilot vessel
D. Dredging vessel
When proceeding along a narrow channel, you are going to be near which side as much as possible?
A. Outer limit, starboard side
C. Inner limit, starboard side
B. Outer limit, port side
D. Inner limit, port side
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