On a nautical chart,the inner ring of a compass rose indicates ______.
A.true directions
B.compass error
C.deviation
D.magnetic directions
第1题:
The numeral in the center of a wind rose circle on a pilot chart indicates the ______.
A.total number of observations
B.average wind force on the Beaufort scale
C.average wind force in knots
D.percentage of calms
第2题:
Your vessel is proceeding down a channel,and you see a pair of range lights that are in line dead ahead.The chart indicates that the direction of this pair of lights is 229°T,and variation is 6°W.If the heading of your vessel at the time of the sighting is 232°per standard magnetic compass,what is the correct deviation ________.
A.3°E
B.9°E
C.3°W
D.9°W
第3题:
Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
第4题:
Magnetic compass deviation______.
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
第5题:
magnetic equator
magnetic longitude reference line
points where there is no variation
points where there is no annual change in variation
第6题:
variation
true directions
magnetic directions
annual rate of variation change
第7题:
Vector chart format
Raster chart data
pixel
Electronic Nautical Chart
第8题:
1 minute of longitude
1 degree of longitude
1 minute of latitude
1 degree of latitude
第9题:
Magnetic compass table
Magnetic meridians
Isogonic lines
Variation is not indicated on small-scale nautical charts
第10题:
scales of latitude
scales of longitude
compass rose
source data
第11题:
Notice to Mariners
Coast Pilots
nautical chart catalogs
Sailing Directions
第12题:
found in the center(s) of the compass rose(s)
indicated by isogonic lines
found in a note on the chart
All of the above
第13题:
Information for updating nautical charts is primarily found in the ______.
A.Notice to Mariners
B.Coast Pilots
C.nautical chart catalogs
D.Sailing Directions
第14题:
______ is a digitized“picture”of a chart.
A.Vector chart format
B.Raster chart data
C.pixel
D.Electronic Nautical Chart
第15题:
How is variation indicated on a small-scale nautical chart?______.
A.Magnetic compass table
B.Magnetic meridians
C.Isogonic lines
D.Variation is not indicated on small-scale nautical charts
第16题:
Magnetic information on a chart may be ______.
A.found in the center(s) of the compass rese(s)
B.indicated by isogonic lines
C.found in a note on the chart
D.All of the above
第17题:
true directions
compass error
deviation
magnetic directions
第18题:
deviation
annual rate of variation change
precession
compass error
第19题:
Compass error is negligible at or near the earth's magnetic poles
It does not have to be checked as often
It is reliable due to it's essential simplicity
All points on the compass rose are readily visible
第20题:
compass north
the direction of the vessel's head
magnetic north
a relative bearing taken with an azimuth circle
第21题:
Cly
Cla
Cl
C
第22题:
total number of observations
average wind force on the Beaufort scale
average wind force in knots
percentage of calms
第23题:
varies depending upon the bearing used
is the angular difference between magnetic north and compass north
is published on the compass rose on most nautical charts
is the angular difference between geographic and magnetic meridians