Survey and construction monitoring for a number of underwater electrical routes. A combination of multi-beam bathymetry, side scan sonar, sub-bottom profilers, and magnetometers used to map routes. Biological and geophysical sampling along route. During construction, real-time water samples of the sediment plume from disturbed bottoms were collected. In addition, an Acoustic Doppler Current Profiler was used to map the plume in real time.
