| Hydrographic surveying equipment is utilized for | | | | equipment were sonar. This is a sound that is |
| mapping the terrain that is under large and small | | | | transmitted in the same way that a dolphin or |
| bodies of water. Doing this is vital for producing | | | | whale uses echo location. The length of time that |
| travel paths that are easily navigable for any type | | | | it would take for the sound to bounce back would |
| of seafaring vessel. Oil companies use underwater | | | | determine the depth of the water at that specific |
| land surveying to find likely areas for oil drilling. | | | | point. The readings of this type were not always |
| This process can also allow for accurate locations | | | | the most accurate as there could be other |
| of under water volcanic activity. For these | | | | factors that interrupted the signal or created a |
| reasons, the surveys must be as accurate as | | | | false time line and there for a false reading of |
| possible. | | | | depth. |
| In order to offer the best path for ships of any | | | | With the new technology in hydrographic |
| type, the waters must be surveyed. The sea | | | | surveying equipment, these readings and data are |
| floor is ever changing so these surveys need to | | | | much more accurate than ever before. In many |
| be completed more often than other type of land | | | | cases, the actual sea floor can be established with |
| survey. One of the most common reasons for | | | | a few passes with this new technology. Complete |
| the changes is volcanic activity. This is most | | | | topography of ocean and large lake floors can |
| common in the South Pacific areas of the earth. | | | | now be easily mapped out. |
| Oil companies use hydrographic surveying | | | | A land surveyor who specializes in underwater |
| equipment to make out likely areas for oil drilling. | | | | surveys will also need other surveying tools that |
| It is expensive to set up oil rigs so accuracy is | | | | will allow for more efficient data collection. This will |
| even more vital here. Once the well has been set | | | | ensure an accurate reading and will correct or |
| and the rig is in full operation, they must be | | | | make the proper changes to reflect this error. |
| checked for safety. This is also done with | | | | When the data is one hundred percent correct, it |
| surveying equipment. | | | | will be sent to an office where the information is |
| For accuracy, there are stringent policies regarding | | | | turned into topographical maps and navigation |
| this data collection. This data can include large | | | | routes. |
| bodies of water such as oceans and seas along | | | | When completing underwater surveys, it has been |
| with lakes and rivers. The shorelines around these | | | | made easier with the use of hydrographic |
| bodies of water are also going to benefit from | | | | surveying equipment. These surveys are used to |
| hydrographic surveying equipment. One way this | | | | make water crossing safer. They are also used |
| collection is used is to aid in navigating water | | | | for the mapping of the land underneath |
| ways by boat. | | | | waterways including rivers, lakes, seas and |
| The very first types of underwater measuring | | | | oceans. |