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Ballasting the subsea base

Posted on: July 7, 2016

Today, the first Cape Sharp Tidal turbine and the Scotia Tide barge arrive in the Halifax Harbour for the next step in our operational preparations. The turbine sits on a steel subsea base, which will be ballasted (filled) with concrete. Hundreds of tonnes of concrete will be poured into the subsea base using cables connected to underwater valves. As always, safety is our top priority in all operations, including marine transit and while at port. The work in Halifax is expected to take about ten days.

We often refer to the subsea base as a “gravity” base, which means that the turbine will rest on the sea floor under its own weight. There is no drilling, mooring or need for substrate preparation at our FORCE berth site.

The ballasting will be done by RMI Marine which is based out of Dartmouth, and the and the work will take place at the Richmond Terminal (Pier 9.) The turbine is being towed by the Atlantic Towing vessel, the Atlantic Fir. RMI Marine and Atlantic Towing are just two of the local companies we’ve contracted as part of our commitment to invest in the Nova Scotia tidal energy supply chain.

Cape Sharp Tidal turbine in transit to Halifax
Cape Sharp Tidal turbine in transit to Halifax

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