Capt Test Flashcards
A DR plot should always be started from:
A known position
Magnetic north differs from true north by:
Variation
Weather systems in the US generally travel from:
west to east
west to east
In which source could you find the number of a chart for a certain geographic area?
Catalog of nautical charts
Catalog of nautical charts
The difference between the heights of low and high tide is th e:
range
range
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristics?
composite flashing group
composite flashing group
What agency established and maintains aids to navigation in the US?
Coast Guard
Coast Guard
The chart projection widely used for navigation is the :
Mercator
Mercator
Chart legends which indicate a conspicuous landmark are printed in:
Capital letters
Capital letters
When navigating a vessel you:
Should never rely on a floating aid to maintain its exact position.
Never rely on floating position to be exact
Which of the buoys could be used to mark anchorage?
Yellow buoy lettered “N”
Yellow buoy lettered “N”
In the northern hemisphere, a wind that shifts counterclockwise is a:
backing wind
backing wind
The direction of the surface wind is/are:
deflected by the earths rotation
deflected by the earths rotation
The reference datum used in determining the heights of land features on most charts is:
Mean high water
Mean high water
A line of position formed by sighting two charted objects in a direct line is called a(n)?
Range line
Range line
A buoy with a composite group-flashing light indicates a(n)?
preferred channel
preferred channel
Light lists for coastal waters are:
correct only to the date of publication
correct only to the date of publication
Green lights may appear on:
horizontally banded buoys
HBB
How many high waters usually occur each day on the East Coast of the US?
Two
Spring tides occur:
When the sun, moon, and earth are nearly in line
S,M, E are in nearly in line.
Mean lower low water is the reference plan used for:
soundings on the east and west coast
soundings on the east and west coast only
Which government agency publishes the US Coast Pilot
National Ocean Service
NOS
What indicates a buoy that should be left to port when entering from seaward?
odd number
odd number
On a weather chart, a warm front is indicated by what symbol?
Line with red half circles on one side
RHC
