For one thing, the UK-Swedish company's machine aims to harness 'slow currents' — speeds of 1.2-2.2 metres per second (m/s) — rather than the high-velocity flow rates on which many emerging turbine designs depend.
For another, the spark of conception for its wing-and-turbine design came from its inventors' musings on the potential of wind power rather than that of the ocean.
"The
