Following successful installation of the Oceanus 2 to its berth at WaveHub, the device was left with minimal internal pressure pending an opportunity for us to catch up on some sleep. Not so the Oceanus! The National Coastwatch Institute lookout station at St Ives have kindly allowed us to install a shore-station for the radio data link which will allow us to monitor and remotely control the Oceanus 2. On Wednesday afternoon, somewhat refreshed, we connected up the shore radio terminal and were delighted to discover that the small residual swell overnight of less than 0.5m had been sufficient for the Oceanus to self-start without the need for priming. Without prompting, the system had brought itself to its initial pre-set operating pressure of between 25 and 40 Bar. Each wave ‘pump’ could be clearly seen on the trend analysis functions within our control software and internal pressures sustained. The Oceanus 2 is showing us her potential.
The graph above is based on raw data taken direct from the device and is but one of the measurements being collected constantly by the onboard systems. Over the next few weeks we have much to do to calibrate sensors, analyse the initial results, tweak settings to optimise performance and explore the impact of various factors and variables. Most importantly, we shall be comparing the performance of the device with the theoretical predictions for a full range of wave, weather and tidal conditions. We intend to share the data and analyse it as part of a dissertation project being conducted by our very own Sebastian Perry as he studies for a part-time MSc in Marine Renewable Energy at Plymouth University. We also hope to share core performance data online once we have completed the initial commissioning phase (and found a clever person who can write the code for the web interface to do so!).
In the meantime, there is some sporty weather to endure which will provide an early test of the moorings infrastructure.