Psp Test #1

Question 1

Unlighted, red and green, horizontally-banded buoys with the topmost band red
.

Answer 1

are conical in shape and called nun buoys

Question 2

The period at high or low tide during which there is no change in the height of the water is called the .

Answer 2

Stand of the tide

Question 3

When you are steering on a pair of range lights and find the upper light is above the lower light you should .

Answer 3

Continue on the present course

Question 4

When displayed under a single-span fixed bridge, red lights indicate .

Answer 4

The channel boundaries

Question 5

A buoy having red and green horizontal bands would have a light characteristic of

Answer 5

Composite group flashing

Question 6

The direction of the surface wind is .

Answer 6

from high pressure toward low pressure deflected by the earth’s rotation

Question 7

“Stand” of the tide is that time when .

Answer 7

the vertical rise or fall of the tide has stopped

Question 8

A vessel’s position should be plotted using bearings of .

Answer 8

Fixed known objects on shore

Question 9

Which buoy is NOT numbered?
Green can buoy
Preferred-channel buoy
Red lighted buoy
Green gong buoy (21)

Answer 9

Preferred channel buoy

Question 10

When using a buoy as an aid to navigation which of the following should be considered?
The buoy should be considered to always be in the charted location.
If the light is flashing, the buoy should be considered to be in the charted location.
The buoy may not be in the charted position.
The buoy should be considered to be in the charted position if it has been freshly painted.
(28)

Answer 10

The buoy may not be in the charted position

Question 11

You are approaching a multiple-span bridge at night. The main navigational channel span will be indicated by .
A. a quick flashing red or green aid to navigation
B. a steady blue light in the center of the span
C. 3 white lights in a vertical line in the center of the span
D. a flashing green light in the center of the span (29)

Answer 11

3 white lights in a verticals line in the center of the span

Question 12

When approaching a preferred-channel buoy, the best channel is NOT indicated by the .
A. light characteristic
B. color of the uppermost band
C. shape of an unlighted buoy
D. color of the light (31)

Answer 12

Light characteristics

Question 13

The datum used for soundings on charts of the Atlantic Coast of the United States is mean .

Answer 13

Lower low water

Question 14

The Local Notice to Mariners is usually published .
A. daily
B. weekly
C. monthly
D. semiannually (34)

Answer 14

Weekly

Question 15

What does the term “tide” refer to?

Answer 15

Vertical movement of water

Question 16

Mean high water is the reference plane used for .

Answer 16

heights above water of land features such as lights

Question 17

A buoy with a composite group-flashing light indicates a(n) .

Answer 17

Bifurcation (division into two parts)

Question 18

The range of tide is the

Answer 18

The difference between heights of high and low tide

Question 19

When should a navigator rely on the position of floating aids to navigation?
A. During calm weather only
B. During daylight only
C. Only when inside a harbor
D. Only when fixed aids are not available

Answer 19

Only when fixed aids are not available

Question 20

In the U.S. Aids to Navigation System, red and green horizontally-banded buoys mark .
A. channels for shallow draft vessels
B. general anchorage areas
C. fishing grounds
D. junctions or bifurcations

Answer 20

Junctions and bifurcations

Question 21

The reference datum used in determining the heights of land features on most charts is .
A. mean sea level
B. mean high water
C. mean low water
D. half-tide level (52)

Answer 21

Mean high water

Question 22

Red lights may appear on .
A. horizontally banded buoys
B. vertically striped buoys
C. yellow buoys
D. spherical buoys (61)

Answer 22

Horizontally banded buoys

Question 23

Charted depth is the .
A. vertical distance from the chart sounding datum to the ocean bottom, plus the height of tide
B. vertical distance from the chart sounding datum to the ocean bottom
C. average height of water over a specified period of time
D. average height of all low waters at a place

Answer 23

Vertical distance from the chart sounding datum to the ocean bottom

Question 24

Mean lower low water is the reference plane used for .
A. all vertical measurements
B. heights above water for lights, mountains, etc.
C. soundings on the U.S. east and west coasts
D. water depths on the U.S. east coast only

Answer 24

Soundings on the US east and west coasts

Question 25

What will a veering wind do?
A. Change direction in a clockwise manner in the Northern Hemisphere
B. Circulate about a low pressure center in a counterclockwise manner in the Northern Hemisphere
C. Vary in strength constantly and unpredictably
D. Circulate about a high pressure center in a clockwise manner in the Southern Hemisphere

Answer 25

Change direction in a clockwise manner in the northern hemisphere

Question 26

A preferred-channel buoy may be .
A. lettered
B. spherical
C. showing a white light
D. All of the above

Answer 26

Lettered

Question 27

The datum from which the predicted heights of tides are reckoned in the tide tables is .
A. mean low water
B. the same as that used for the charts of the locality
C. the highest possible level
D. given in table three of the tide tables

Answer 27

The same as that used for the charts of the locality

Question 28

When there are small differences between the heights of two successive high tides or two low tides, in a tidal day, the tides are called .
A. diurnal
B. semidiurnal
C. solar
D. mixed

Answer 28

Semidiurnal

Question 29

When the moon is at first quarter or third quarter phase, what type of tides will occur?
A. Apogean
B. Perigean
C. Neap
D. Spring

Answer 29

Neap

Question 30

A buoy with a composite group-flashing light indicates a(n) .

Answer 30

Bifurcation (divided into two sections)

Question 31

On the west coast of North America, charted depths are taken from .
A. high water
B. mean tide level
C. mean low water
D. mean lower low water

Answer 31

Mean lower low water

Question 32

A weather forecast states that the wind will commence backing. In the Northern Hemisphere, this would indicate that it will .
A. shift in a clockwise manner
B. shift in a counterclockwise manner
C. continue blowing from the same direction
D. decrease in velocity (86)

Answer 32

Shift in a counter clockwise manner

Question 33

A tide is called diurnal when .
A. only one high and one low water occur during a lunar day
B. the high tide is higher and the low tide is lower than usual
C. the high tide and low tide are exactly six hours apart
D. two high tides occur during a lunar day

Answer 33

Only one high and one low water occur during a lunar day

Question 34

When the moon is new or full, which type of tides occur?
Neap
Spring
Diurnal
Apogean

Answer 34

Spring

Question 35

A weather forecast states that the wind will commence veering. In the Northern Hemisphere this indicates that the wind will .
A. shift in a clockwise manner
B. shift in a counterclockwise manner
C. continue blowing from the same direction
D. increase in velocity

Answer 35

Shift in a clockwise manner

Question 36

The lunar or tidal day is .
A. about 50 minutes shorter than the solar day
B. about 50 minutes longer than the solar day
C. about 10 minutes longer than the solar day
D. the same length as the solar day

Answer 36

50 minutes longer than a solar day

Question 37

A lighted preferred-channel buoy may show a .
A. fixed red light
B. Morse (A) white light
C. composite group-flashing light
D. yellow light (101)

Answer 37

Composite group flashing light

Question 38

A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a .
A. foehn
B. chinook
C. land breeze
D. sea breeze

Answer 38

Sea breeze

Question 39

The average height of the surface of the sea for all stages of the tide over a 19 year period is called .
A. mean high water
B. mean low water
C. half-tide level
D. mean sea level

Answer 39

Mean sea level rise

Question 40

A millibar is a unit of .
A. humidity
B. precipitation
C. pressure
D. temperature

Answer 40

Pressure