Nautical Chart Principles

Question 1

Datum

Answer 1

Reference for calculating navigation.

Question 2

What would one find on a nautical chart?

Answer 2

Compass rose
Scale
Dates
Shoreline
Soundings
Anchorages
Buoys
Traffic Separation Schemes

Question 3

T/F Foreign Charts use same symbols as US

Answer 3

False

Question 4

Lead Line

Answer 4

Device consisting of a marked line with a weight attached to one end

Question 5

Wire Drag

Answer 5

Two vessels move in the same direction with line connected between them that is submerged

Question 6

Echosounders

Answer 6

Determines depth by measuring time it takes sounds to travel from source, to seabed and back to source

Question 7

Bathymetric LIDAR

Answer 7

Uses lasers attached to aircraft to conduct surveys

Question 8

What provides information about the quality and coverage of cartographic data in an area?

Answer 8

CATZOC

Question 9

What does Hydrography Study?

Answer 9

Marine Nav
Water Depth
Shoreline
Tide
Currents
Bottom Type
Undersea Obstructions

Question 10

Chart No. 1

Answer 10

Lists and provides descriptions of symbols on a nautical chart

Question 11

Benefit of NOAA print on demand capabilities

Answer 11

Water resistant

Question 12

The NOS is responsible for charting the coastal waters of the U.S. T/F

Answer 12

True

Question 13

Catrography

Answer 13

Takes hydrographic info and makes it into a chart

Question 14

Geodesy

Answer 14

science of accurately measuring and understanding the Earth’s geometric shape

Question 15

Reference surfaces for the Earth in Geodetic Applicaitons

Answer 15

Physical surface
geoid
ellipsoid