Fugro has announced that it undertaken trials of a new system designed to detect low ferrous content unexploded ordnance (UXO) in marine environments.
The new Geo Wing system is designed for use by subsea projects such as wind farms and cable route developments, particularly in “noisy” marine environments and areas affected by strong tidal currents.
According to Fugro, the magnetic signature from small items of UXO can often be masked by the magnetic signature of other sources, such as the background geology. The Geo Wing has been designed to overcome this issue and is a fixed gradiometer array consisting of five magnetometers that detect variations in both vertical and transverse magnetic gradient. The signals enable the ferrous signature from background geology and motion noise to be almost entirely removed from the analysis.
Fugro has said that the use of this new system reduces the number of false positive readings and therefore reduces the number of potential UXO targets that need to be investigated. It is said that the system will dramatically reduce costs for clients and allow more opportunity to re-position subsequent seabed operations away from any potential items of UXO.