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 multibeam technology provides three dimensional bathymetric charts that help avoid steep slopes and trough crossings. Side scan sonar systems enable the classification of sea floor features and sub-bottom profilers confirm sufficient sediment depths. Use of a magnetometer can determine the location of existing pipelines and cables.
Related Projects:
- ROV Multibeam Surveys
- Various Locations, Worldwide
- We performed a series of multibeam surveys for a company that was tasked with mapping a number of existing and proposed sub-sea installations and specializes in acoustic positioning in deep water.
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- Submarine Transmission Cable Installation
- Cook Inlet, Alaska
- We provided surveying and positioning services to support a 138-kilovolt (kV) submarine cable installation project. These services included a desk-top study, a pre-lay marine survey, a post-lay survey, Global Positioning System (GPS) control survey, and other support services during construction.
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- Pipeline Construction to Osprey Platform
- Cook Inlet, Alaska
- We provided support services for a pipeline installation program in a very rough area of Cook Inlet that was exposed to weather from the north and south.
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- Redondo Outfall Inspection
- Seattle, Washington
- Our hydrographers provided submarine acoustic positioning to a Remotely Operated Vehicle (ROV) during an as-laid outfall inspection.
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- Subsea Fiber Optic Cable System
- Northwest, U.S.A.
- In 2008, Alaska Communications System (ACS) installed a 2900 km submarine fiber optic cable across the Gulf of Alaska connecting Oregon and Alaska.
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