MARINE ORDNANCE
FEATURE SPONSOR
WIND
ENERGY & UXO
Factors considered prior to site selection include the traditional skills of hydrographic surveyors – water depth, tidal flows and sediment types. Now some hydrographic surveyors can add UXO detection to their portfolio of skills.
WINDFARM LOCATIONS Distance from shore and accessibility from a suitable servicing port have a large bearing on the location of a windfarm. Broadly speaking, windfarms are situated in water depths of up to 40m, out of a port accessible to larger vessels, and just off a main shipping route so as not to disrupt shipping lanes.
UXO Dummy Model
LIKELY UXO LOCATIONS These factors can mean that suitable areas are likely to be relatively high in UXO. Unexploded bombs that were meant for port areas still lie on the sea bed. Excess ordnance from WWII was also dumped at sea; the minimum distance out of port to save on fuel, and just off the shipping lanes so as to pose least risk to the shipping activities of the time.
This UXO is still on the sea bed, often buried under layers of sediment that has accumulated, and many of the smaller items have been swept along the seabed to new locations.
POTENTIAL RISK
The potential risk posed by UXO on marine construction operations is obvious and real; awareness of this risk has grown in the last few years. It is now a significant factor in preparing a site for construction, and is aided by the information that hydrographic surveyors provide.
Using the right equipment and techniques, hydrographic surveyors accurately detect ferrous UXOs both on and under sediments on the seabed, and report these as targets for further investigation. Insight Marine Projects have provided this service to several windfarms, and have used dummy models laid on the seabed in known locations to prove the accuracy of their techniques.
Insight Marine Projects Click to view more info
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