FS FS - Fundamentals of Surveying Hydrographic Surveying

Question 1

What is hydrographic surveying primarily concerned with?

Accepted Answer

Measurement of water bodies and their underwater features

Answer

Underground water table mapping

Answer

Rainfall and precipitation analysis

Answer

Water quality chemical testing

Question 2

What instrument is primarily used to measure water depth in hydrographic surveying?

Accepted Answer

Echo sounder (depth sounder)

Answer

Total station

Answer

Theodolite

Answer

Water level gauge

Question 3

What does the term 'sounding' refer to in hydrographic surveying?

Accepted Answer

A depth measurement below the water surface

Answer

Acoustic noise level measurement

Answer

The process of locating submerged objects

Answer

Signal transmission between survey vessels

Question 4

What is the standard chart datum for US nautical charts and hydrographic surveys?

Accepted Answer

Mean Lower Low Water (MLLW)

Answer

NAVD 88

Answer

NGVD 29

Answer

International Great Datum (IGD)

Question 5

What is multibeam sonar used for in hydrographic surveys?

Accepted Answer

Collecting depth profiles across a wide swath simultaneously

Answer

Measuring water current velocity

Answer

Locating submerged magnetic objects

Answer

Measuring water temperature and salinity

Question 6

What organization publishes official nautical charts for US coastal waters?

Accepted Answer

NOAA Office of Coast Survey

Answer

US Army Corps of Engineers

Answer

US Geological Survey

Answer

Federal Emergency Management Agency