Marine Geophysical Survey in Looe Bay
Our multi-purpose survey vessel “Investigator” has recently completed a marine geophysical survey in Looe Bay in support of breakwater and pier development works.
Seabed classification was achieved through sediment sampling, sidescan sonar, and backscatter multibeam.
The key design criteria of bedrock depth was addressed through low frequency acoustic sub-bottom profiling. The data is to be reconciled with onshore drilling investigation works.
The extremely shallow water presented a technical challenge for UXO magnetometry – in ensuring adequate sensor vessel separation during tow. LandScope overcame this problem with deployment of a purpose built tail-buoy tow system, allowing the magnetometer array to maintain an adequate tow offset whilst mitigating tow damage risk.
Shallow water environments inevitably present challenges for marine geophysical survey, none more so than the rocky shoreline of Looe. Investigator, with its competent crew and state of the art survey sensor approach, serves such projects admirably.