System installations must be reliable and should be cost effective. The data collected
during the Cable Route Survey allows identification of seabed hazards by the Cable
Route Survey engineers. This precision seabed mapping allows the engineers to
amend the proposed cable route and cable types, if necessary, to avoid potential risks. These precautions mitigate the potential for costly and time-consuming repairs.
SubCom conducts detailed Cable Route Surveys to collect
bathymetric and geomorphologic data using single- and multi-beam bathymetry
systems, side-scan sonar (SSS), and sub-bottom profiler (SBP) equipment. This
information is enhanced by seabed samples and, when necessary, cone penetrometer
tests (CPTs), to determine the composition and geotechnical properties of the seabed.
This data is used to identify risks such as rocky seabed, reefs, and steep slopes. The
Cable Route Survey engineers then refine the route and cable type selection as
appropriate to mitigate risks. A combination of side-scan sonar, sub-bottom profiler,
and cone penetrometer test data enable the SubCom engineers to
predict burial feasibility.