Piloting and Navigation Flashcards
What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?
A. Color and shape
B. Size
C. Method of construction
D. Signal characteristics
A. Color and shape
Red lights may appear on
A. Horizontally banded buoys
B. Vertically stripped buoys
C. Yellow buoys
D. Spherical buoys
A. Horizontally banded buoys
The annual change for variation for an area can be found in…
A. The handbook for Magnetic Compass Adjustment, Pub 226
B. The center of the compass rose on a chart of the area
C. The compass deviation table
D. Variation does not change
B. The center of the compass rose on a chart of the area
In which source could you find the number of a chart for a certain geographic area?
A. Chart No. 1
B. Catalog of Charts
C. American Practical Navigator
D. U.S. Coast Guard Light List
B. Catalog of Charts
Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light listed in the light list in which of the following manners?
A. Geographic positions outlining the area of the sector
B. True bearings as observed from the ship toward the light
C. An outline of the area of the sector
D. True bearings as observed from the light towards the ship
B. True bearings as observed from the ship toward the light
On entering from seaward, a starboard side daymark will…
A. Show a fixed red light if lighted
B. Show a Morse (A) white light
C. Be square in shape
D. Have an even number if numbered
D. Have an even number if numbered
Which buoy may be odd numbered?
A. A spherical buoy
B. Unlighted can buoy
C. A red buoy
D. A yellow buoy
B. Unlighted can buoy
A triangular daymark would be colored…
A. Red
B. Red and white
C. Green
D. Green and white
A. Red
A nun buoy will…
Be green in color
Have an even number
Be left to port when entering from seaward
Be cylindrical in shape
Have an even number
Preferred channel buoys indicate the preferred channel to transit by…
A. Odd or even numbers
B. The color of their top band
C. The location of the buoy in the channel junction
D. The buoy’s light rhythms
B. The color of their top band
Which buoy may be even numbered?
A. Mid-channel buoy
B. Unlighted nun buoy
C. Lighted green buoy
D. All of the above
B. Unlighted nun buoy
Under the IALA-B Buoyage System, a conical buoy will be…
A. Red in color
B. Numbered with an odd number
C. Left to port when entering from seaward
D. All of the above
A. Red in color
Under IALA-B buoyage system, when entering from seaward, a buoy that should be left to port will be…
A. Black
B. Red
C. Green
D. Yellow
C. Green
What are the colors of a mid-channel daymark?
A. Black and red
B. Red and white
C. Green and yellow
D. Green and white
B. Red and white
What are the characteristics of an isophase light?
4 sec. Flash, 2 sec. Eclipse, 3 sec. Flash, 2 sec. eclipse
2 sec. Flash, 5 sec eclipse
1 sec. Flash, 1 sec. Eclipse
6 sec. Flash, 3 sec. Eclipse
1 sec. Flash, 1 sec. Eclipse
Under the U.S. Aids to Navigation system, a yellow buoy is a …
A. Safe water buoy
B. Junction buoy
C. Cardinal mark
D. Special purpose mark
D. Special purpose mark
A white buoy with a blue band is…
A. An isolated danger mark
B. A hydrographic data collection buoy
C. A mooring buoy
D. Marking a restricted area
C. A mooring buoy
What indicates a buoy that should be left to port when entering from sea? (U.S. Aids to Navigation)
A. White light
B. Group flashing characteristic
C. Nun shape
D. Odd number
D. Odd number
When entering a channel from seaward the numbers of the buoys…
A. Are the same as their light list number
B. Are marked in 6 inch figures with retroreflective material
C. Increase with the even numbers to starboard
D. Decrease with the odd numbers to starboard
C. Increase with the even numbers to starboard
The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as…
Set
Frequency
Period
Function
Period
To find the specific phase characteristic of a lighthouse on a sound of the United States you would use the…
A. American Practical Navigator
B. Light List
C. Nautical Chart Catalog
D. U.S. Coast Pilot
B. Light List
Chart legends printed in capital letters show that the associated landmark is…
A. Inconspicuous
B. Conspicuous
C. A government facility or station
D. A radio transmitter
B. Conspicuous
Mariners are first warned of serious defects or important changes to aids to navigation by means of…
A. Marine broadcast notice to mariners
B. Weekly Notice to Mariners
C. Corrected editions of charts
D. Light Lists
A. Marine broadcast notice to mariners
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 dayshape
B. A spherical buoy
What daymark shape is used in the lateral system?
A. Semicircle
B. Triangle
C. Pentagon
D. Diamond
B. Triangle
What is the light characteristic of a lighted preferred channel buoy?
A. Fixed and flashing
B. Continuous quick
C. Isophase
D. Composite group-flashing
D. Composite group-flashing
When you are steering on a pair of range lights and find the upper light is above the lower light you should… (inline)
A. Come left
B. Come right
C. Continue on present course
D. Wait until the lights are no longer in a vertical line
C. Continue on present course
In the U.S. Aids to Navigation System, red and green horizontally banded buoys mark…
Channels for shallow draft vessels
General anchorage areas
Fishing grounds
Junctions or bifurcation
Junctions or bifurcation
Buoys are marked with reflective material to assist in their detection by search light. Which statement is true?
A. A safe-water buoy will display red and white vertical stripes of reflective material
B. All reflective material is white because it is the most visible at night
C. A special-purpose mark will display either red or green reflective material to agree with its shape
D. A preferred-channel buoy displays either red or green reflective material to agree with the top band of color
D. A preferred-channel buoy displays either red or green reflective material to agree with the top band of color
The light rhythm of Morse (A) is shown on…
Preferred-channel buoys
Starboard or port-side buoys
Special marks
Safe water buoys
Safe water buoys
If a magnetic compass is not affected by any magnetic field other than the earth’s, which statement is true?
A. Compass error and variation are equal
B. Compass north will be true north
C. Variation will equal deviation
D. There will be no compass error
A. Compass error and variation are equal
The lubber’s line on a magnetic compass indicates__________.
compass north
the direction in which the boat’s bow is heading.
magnetic north
a relative bearing taken with an azimuth circle
the direction in which the boat’s bow is heading.
Deviation is not constant; it is different with every change in…
A. Speed
B. Vessel heading
C. Geographic location
D. Cargo
B. Vessel heading
To find a magnetic compass course from a true course you must apply…
A. Deviation and variation
B. Deviation
C. Variation
D. Magnetic anomalies (local disturbances)
A. Deviation and variation
The difference in degrees between true north and magnetic north is called….
Variation
Deviation
Drift
PSC
Variation
Which information does the outer ring of a compass rose on a nautical chart provide?
Variation
True directions
Magnetic directions
Annual rate of variation change
True directions
The deviation of a compass for a 235° compass course and a 232° true course with variation of 004°E is…
007°E
007°W
003°W
003°E
007*E
Your chart shows that 3 buoys in line bear 300° true. When in line with these buoys, your compass reads 322°. Your compass error is…
045° E
022°W
016° W
008°E
022°W