Nautical Charts

Question 0

System of _________ and _________ is the frame of reference for all chart construction.

Answer 0

latitude, longitude

** Any location on a chart can be expressed in terms of latitude and longitude.

Question 1

Most charts are oriented with __________ north at the top.

Answer 1

True

Question 2

The __________ scale runs along both sides of the chart.

The __________ scale runs across the top and bottom of the chart.

Answer 2

latitude

longitude

Question 3

Latitude lines are reference points in a _______ and ________ direction with the ___________ as their zero point of reference.

Answer 3

north, south, equator

Question 4

______________lines are the east and west reference points with ____________________ as their zero point reference.

Answer 4

Longitude, Prime Meridian

Question 5

____________ chart projection is the most widely used projection in marine navigation.

Answer 5

Mercator

Question 6

The edition number of a chart is located in the _______________.

Answer 6

lower left hand corner

Question 7

______________ scale charts show a large area. __________ scale charts show a small area.

Always navigate using the ____________ scale chart available for the area in which operating.

Answer 7

Small, Large, Largest

Question 8

Directions on the chart are measured by using the _____________

Answer 8

Compass Rose

Question 9

Direction is measured as a ______________line from the __________ of the circle to a ___________ on the compass rose.

Answer 9

straight, center point, number

Question 10

Standardized chart symbols and abbreviations are contained in CHART No. 1. It is a NOAA/NOS resource. T or F

Answer 10

True

Question 11

What does ATON mean?

Answer 11

Aid to navigation

Question 12

___________ Roman lettering (italics) is used to label all information affected by tidal change or current. All descriptive lettering for bouys is in ___________ letters.

___________ roman (capital) lettering is used to label all conspicuous information that is not affected by tidal change or current.(ex. Fixed ATON, lighthouses, Terrestrial light beacons)

Answer 12

slanted, slanted, vertical

Question 13

A chart is only as accurate as the survey which it is based. T or F

Answer 13

True

Question 14

Large or irregular blank spaces among ____________ mean that no ___________ were obtained in those areas.

Answer 14

soundings, soundings

Question 15

_____________ are out of date before they are even printed. This is because changes occur daily.

Answer 15

Charts

Question 16

Charts are corrected using the information provided in the Coast Guard’s ___________________. They are published ___________ by geographic location.

Answer 16

Local Notice to Mariners, weekly