https://engineering.purdue.edu/~liu396/paper/?id=best-college-essay-services&ts=1 Underwater autonomous module for the surveillance and measurement of pipelines lateral and longitudinal movements, using a profiling sonar, coupled to a recording and acoustic transmission system. The project, coordinated by Subsea Tech with Ifremer, Comex and Chrisar Software Technologies as partners, is presently in its detailed design phase.