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Hydro International -
One of the latest renewable energy sources currently being investigated for future large scale commercial deployment is tidal energy that exploits the natural ebb and flow of coastal tidal waters.
As with other energy sources offshore, innovations to harness tidal forces often throw up additional operational difficulties particularly to do with positioning of the devices on the ocean floor and their connections to shore.
Triscom have recently added the latest USBL positioning system, the Applied Acoustics' Easytrak Nexus, to its equipment pool to meet the increasing requirement for accurate underwater positioning tasks.
Triscom is experienced in hydrographic/seabed survey and is recently involved in the installation and testing of a tidal energy test rig off the Orkney Isles in Scotland.
"We were required to inspect some subsea cabling in the area of a massive OpenHydro tidal turbine off the island of Eday in Orkney,
" stated Tristan Thorne, the senior surveyor, "because it was important to know what was happening in the deep inlet where surges of water are funneled along a particular channel.
As the turbine is mounted on the seabed, deep enough not to interfere with shipping traffic, its positioning is critical as are the cables in the vicinity that lead to shore."
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