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ANCHORING & MOORINGS Credit image – photo by Tom Kleindinst


Chris Hines (EOM Offshore) helping to prepare the Environmental Sample Processor (ESP) which utilises the EOM stretch hose.


whales’ vocalisation from Passive Acoustic Moorings, researchers and observers are able to monitor the presence and location of these animals. With this information, vessels could be warned to change their course, lower their speed, and look out for whales in their paths, reducing the risk of collisions.


Passive Acoustic Moorings have been deployed near New York, Massachusetts, and Maine, in and around busy shipping lanes, relaying information on whale presence and location in near real-time to prevent ship strikes. These innovative stretch hose moorings, supporting a hydrophone, can detect and relay underwater sounds in all sea state and weather conditions. Traditional surface moorings include slack to accommodate buoy movement in storm conditions, resulting in flow noise that masks underwater sound signals


and makes acoustic detection impossible in anything other than calm conditions. The EOM stretch hose enables real time data to be collected in all conditions, with minimal flow noise due to hydrophone movement.


LOOKING FORWARD


WHOI and EOM are in the process of extending the power-handling capabilities of the stretch hose to encompass the high voltage and current required by floating offshore power-generating installations. All floating power generating technology is faced with significant wave & tidal action- induced fatigue of the cables used to conduct the generated power to the sea floor distribution network. These power cables are subjected to continuous cyclical bending and fatigue between the platform and the ocean floor, resulting in costly


failures. Electromechanical Stretch Hoses, engineered for toughness, long-life, and fatigue resistance, offer unprecedented reliability in these applications. Development partners are being sought to join a WHOI/EOM venture to develop working prototypes for high-power stretch hoses. Stretch hose technology is currently covered by two issued and one pending US patent.


Woods Hole Oceanographic Institution EOM Offshore


SCAN/CLICK


MORE INFO www.wavetidalenergynetwork.co.uk PAGE 13


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