OUPV Practice Test- Navigation General
Questions And Correct Answers
the term slackwater during a tidal change means
little or no movement of water
when heading into a channel and the two range lights are in line line you should
keep your course
you observe a buoy mark having a green and red horizontal bands. what light
characteristic will it have?
composite group flashing
the direction of the earth's surface wind is
deflected by the earths rotation
your vessel's position should be plotted using bearings of
fixed known positions on land
,which buoys may be lettered and not numbered
preferred channel buoy
spring tides will produce
higher highs and lower lows than normal
you must assume when using a buoy as an aid to nav.
the buoy may not be in the charted position
the "local notice to mariners" provides corrections of local nature to charts and is
published
weekly
the term "tide" means
vertical movement of the water
when plotting a voyage
never rely on a floating buoy to be on station as charted
, the difference in height between high tide and low tide
range of tide
from seaward the IALA Region B red and green horizontally- banded buoys refer to
preferred channels
determining the heights of land features on most charts unless otherwise stated the
reference datum is
mean high water
red or green lights may appear on
horizontally banded buoys
the depth of the water on a chart is the
vertical distance from the chart sounding datum to the ocean bottom
north hemisphere wind which shirts in a counter clockwise motion is called
backing wind
Questions And Correct Answers
the term slackwater during a tidal change means
little or no movement of water
when heading into a channel and the two range lights are in line line you should
keep your course
you observe a buoy mark having a green and red horizontal bands. what light
characteristic will it have?
composite group flashing
the direction of the earth's surface wind is
deflected by the earths rotation
your vessel's position should be plotted using bearings of
fixed known positions on land
,which buoys may be lettered and not numbered
preferred channel buoy
spring tides will produce
higher highs and lower lows than normal
you must assume when using a buoy as an aid to nav.
the buoy may not be in the charted position
the "local notice to mariners" provides corrections of local nature to charts and is
published
weekly
the term "tide" means
vertical movement of the water
when plotting a voyage
never rely on a floating buoy to be on station as charted
, the difference in height between high tide and low tide
range of tide
from seaward the IALA Region B red and green horizontally- banded buoys refer to
preferred channels
determining the heights of land features on most charts unless otherwise stated the
reference datum is
mean high water
red or green lights may appear on
horizontally banded buoys
the depth of the water on a chart is the
vertical distance from the chart sounding datum to the ocean bottom
north hemisphere wind which shirts in a counter clockwise motion is called
backing wind
