A Short Quiz
1. A buoy having red (top) and green (bottom) horizontal bands would have the light characteristics of:
A-Interrupted quick flashing.
B-Composite group flashing (2+1).
2. A safe water mark may be:
A-Vertically red and white striped.
B-Spherical top mark.
C-Showing a white light.
D-All of the above.
3. Which navigational mark may only be lettered?
A-An unlighted, green, can buoy.
B-A spherical buoy.
C-A red buoy.
D-A port side day-shape.
4.You are heading out to sea in a buoyed channel and see a quick flashing green light on a buoy ahead of you. In US waters, you should leave the buoy:
A-Well clear on either side.
B-About 50 yards off on either side.
5. A buoy marking a wreck will show a(n):
A-White light FL (2) and a top-mark of two black spheres.
B-Occulting green light and may be lettered.
C-Yellow light and will be numbered.
D-Continuous quick white light and may be numbered.
6. You are approaching a swing bridge at night. You will know that the bridge is open for river traffic when:
A-The fixed, green light starts to flash.
B-The amber light changes to green.
C-The red light is extinguished.
D-The red light changes to green.
7. When you are steering on a pair of range lights and find the upper light is above the lower light you should:
C-Continue on the present course.
D-Wait until the lights are no longer in a vertical line.
8. When displayed under the a single-span fixed bridge, red lights indicate:
A-The channel boundaries.
B-That all vessels must stop.
C-The bridge is about to open.
D-That traffic is approaching from the other side.
9. When navigating a vessel, you:
A-Can always rely on a buoy to be on station.
B-Can always rely on a buoy to show proper light characteristics.
C-Should assume a wreck buoy is directly over the wreck.
D-Should never rely on a floating aid to maintain its exact position.
10. A lighthouse can be identified by its:
B-Light color and phase characteristics.
C-Type of structure.
D-All of the above.
1.B 6. D
2. D 7. C
3. B 8. A
4. D 9. D
5. A 10. D