Intro to Nav

Question 1

One degree of latitude equals?

Answer 1

60nm

Question 2

One minute of latitude equals?

Answer 2

1nm

Question 3

Most charts used for piloting are?

Answer 3

Mercator Projections

Question 4

A Mercator chart is what kind of projection?

Answer 4

Cylindrical

Question 5

On a Mercator Chart, 1nm is equal to?

Answer 5

1 min of latitude

Question 6

Is the date of the first edition found in the chart title?

Answer 6

No

Question 7

Large scale charts cover?

Answer 7

Relatively small areas

Question 8

Charts covering relatively large areas in generalized details are?

Answer 8

small scale charts

Question 9

The revision date of a chart is printed where?

Answer 9

lower left-corner

Question 10

Chart sounding datum is found?

Answer 10

In the chart title

Question 11

The datum used for soundings on charts of the East Coast of the US is?

Answer 11

mean lower low water

Question 12

Survey info is found?

Answer 12

Chart title

Question 13

Outer ring of the compass rose on a nautical chart?

Answer 13

True direction

Question 14

Inner ring of a compass rose on a nautical chart?

Answer 14

magnetic direction

Question 15

Chart legends printed in capital letters show?

Answer 15

That the associated landmark is conspicuous

Question 16

When slanted letters are used to spell the name of a charted object you know?

Answer 16

That the object may cover and uncover with tide

Question 17

If you’re headed southward along the east coast of the US, you encounter a buoy showing a red flashing light; you should pass this buoy by leaving it to?

Answer 17

starboard

Question 18

Preferred channel buoys indicate the preferred channel to transit by?

Answer 18

The color of their top band

Question 19

Nun buoys?

Answer 19

Unlighted, red and green, horizontally banded buoys with the topmost band red and are conical in shape

Question 20

Are preferred channel buoys numbered?

Answer 20

NO

Question 21

May preferred channel buoys be lettered?

Answer 21

yes

Question 22

A lighted buoy with a spherical topmark marks?

Answer 22

safe water

Question 23

Can spherical buoys be lettered?

Answer 23

yes

Question 24

A safe water daymark?

Answer 24

Octagon

Question 25

What does an odd number on a buoy indicate?

Answer 25

Should be left to port when entering from seaward

Question 26

Unlighted can buoy may be numbered?

Answer 26

Odd

Question 27

Unlighted nun buoy may be numbered?

Answer 27

even

Question 28

Red lights may appear on?

Answer 28

horizontally banded buoys

Question 29

A vertically stripped buoy may be lighted?

Answer 29

with a white light

Question 30

A buoy having red and white vertical stripes has a light characteristic of?

Answer 30

Morse (A)

Question 31

Yellow buoy may mark?

Answer 31

a fish net area, or an anchorage area

Question 32

Navigational marks used for informational or regulatory purposes are?

Answer 32

white with orange geometric shapes

Question 33

A white buoy with an open-faced orange diamond on it indicates?

Answer 33

danger

Question 34

A white diamond daymark with an orange border is?

Answer 34

an information regulatory mark

Question 35

A white buoy with a blue band is?

Answer 35

a mooring buoy

Question 36

A fixed red light signal on a drawbridge indicates?

Answer 36

the draw will not be opened immediately

Question 37

Color sectors may indicate?

Answer 37

dangerous waters, the best way across a shoal or indicate a turning point in a channel

Question 38

red sector navigation lights warn?

Answer 38

mariners of shoals or nearby land

Question 39

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector, the red sector indicates?

Answer 39

Danger area

Question 40

A triangular daymark would be colored?

Answer 40

red

Question 41

A square daymark would be colored?

Answer 41

green

Question 42

A mid-channel daymark would be colored?

Answer 42

red and white

Question 43

Portside daymarks may be numbered?

Answer 43

yes

Question 44

A light having characteristics which include color variations is defined as?

Answer 44

Alternating

Question 45

A light that has a period shorter than its dark period is described as?

Answer 45

flashing

Question 46

A lateral system buoy displaying a quick flashing light indicates?

Answer 46

That special caution is required

Question 47

Isophase light?

Answer 47

1 sec. Flash, 1 sec. eclipse

Question 48

The intensity of a light is expressed as?

Answer 48

The nominal range in the Light List

Question 49

When a buoy is in position only during certain periods of the year the dates of when it is in position are found?

Answer 49

In the Light List

Question 50

What info concerning lighted aids to navigation may be read directly from the Light List?

Answer 50

location, height above water and luminous range