Capabilities
TerraSond’s highly skilled and trained professionals have the ability to plan for and execute hydrographic, geophysical and land surveys that range from the very simple to the very complex. Data is collected and measurements are taken from both onshore and offshore and in waters ranging from shallow coastal to deep ocean. Using industry standard state-of-the-art equipment, TerraSond collects, processes, and stores a vast amount of oceanographic and hydrographic data.
Cable/Pipeline Support Surveys
Cable/Pipeline As-Built Surveys
Combining both installation information as well as survey information collected following installation we can provide documentation and drawings of the final true (as opposed to designed) location of both power and communications cables and pipelines of all sorts.
The data collected can be both on shore, collected w…
Cable/Pipeline Staking
Construction staking for cable and pipeline installation can be crucial for ensuring that the cable or pipeline is in it's easement and avoids other utilities.
It is best done in close coordination with the installation company and we have successfully coordinated projects that required staking onshore and positioni…
Condition Surveys
Subsea cable and pipeline are critical commercial assets and require routine inspection for fatigue, bending and external damage, scour and sediment migration. Suspended cables and pipelines in high current areas can be prone to early fatigue from "strumming".
TerraSond uses multibeam and side scan sonar systems fo…
Desktop Studies (DTS)
Desktop route assessment studies are necessary when choosing the safest and most efficient route for a cable or pipeline project.
Our knowledge and experience performing hydrographic surveying and mapping for marine cable and pipeline projects give us an advantage when performing these route assessment studies. We …
Landing Site Surveys
These surveys are conducted at proposed landing sites to provide detailed information of a specific area prior to engineering or construction of a cable or pipeline. These surveys provide information to the engineer regarding any existing structures, utilities, topography and property lines in the area.
Marine Route Surveys
Marine Route Surveys are necessary for choosing the safest and most efficient route for a cable or pipeline project. In addition to conducting these hydrographic surveys, TerraSond works closely with the engineer and investigates all available sources of information along the marine route. Investigations include navi…
Offshore Positioning
Our hydrographers provide offshore positioning for support of construction, science and resource exploration.
We can provide precision positioning of both surface and subsurface objects. We have the systems and experience to position multiple objects and support oil rig moves, pipeline, outfall or cable installatio…
Route Surveys
Identifying a safe route for a new cable or pipeline and avoiding damage to existing cables requires reliable acoustic multi-tool instrumentation. TerraSond collects detailed bathymetry and seafloor geomorphology along proposed cable routes to verify and refine cable engineering and route selection.
High resolution…
Side Scan Sonar Surveys
Sidescan is useful for mapping, search activities, engineering corridors and also for habitat mapping. It can provide wider coverage in each pass than multibeam sonar and can often discern smaller objects.
TerraSond has used sidescan for numerous projects and owns a large number of highly accurate and efficient sys…