10.11. Errors in Hydrographic Surveying

Try these first

1. 1.

   What is meant by instrumental errors in hydrographic surveying?

   Hint

   Think about how equipment affects measurements.

2. 2.

   Name one factor that contributes to observational errors.

   Hint

   Consider how nature affects survey results.

3. 3.

   What type of error results from improper calibration of survey instruments?

   • A) Locational Errors
   • B) Instrumental Errors
   • C) Observational Errors

   Hint

   Think about the equipment and its reliability.

4. 4.

   True or False: Observational errors can be influenced by weather conditions.

   • True
   • False

   Hint

   Consider the impact of storms or clear skies on surveying.

5. 5.

   You are conducting a hydrographic survey when you notice that your echo sounder has been showing consistently deeper readings. Discuss the possible causes and remedies.

   Hint

   Think about what happens when equipment and nature don’t align.

6. 6.

   During a tidal correction, you applied a local tide gauge reading that was off by an hour. Assess how this could impact your depth readings.

   Hint

   Be mindful of timeliness in measurements and their application.