search
arrow-left Previous
Next arrow-right
Q: Which of the following doesn't describe the use of hydrographic surveying?
  • A. Navigation charts for navigation
  • B. Establishing mean sea level
  • C. Laying an alignment
  • D. Making underground investigations
Correct Answer: Option B - Hydrographic survey–It is a survey of physical features present under water. It is the science of measuring all factor beneath the water that affect all the marine activities like dredging, marine constructions, offshore drilling etc. Use of hydrographic surveying are given below– 1. Depth of bed can be determined 2. Shorlines can be determined 3. Navigation chart preparation 4. Laying an alignment 5. Making underground investigations
B. Hydrographic survey–It is a survey of physical features present under water. It is the science of measuring all factor beneath the water that affect all the marine activities like dredging, marine constructions, offshore drilling etc. Use of hydrographic surveying are given below– 1. Depth of bed can be determined 2. Shorlines can be determined 3. Navigation chart preparation 4. Laying an alignment 5. Making underground investigations

Explanations:

Hydrographic survey–It is a survey of physical features present under water. It is the science of measuring all factor beneath the water that affect all the marine activities like dredging, marine constructions, offshore drilling etc. Use of hydrographic surveying are given below– 1. Depth of bed can be determined 2. Shorlines can be determined 3. Navigation chart preparation 4. Laying an alignment 5. Making underground investigations