Saturday turned out to be the perfect day to eventually run the "SES-light" (the parametric echosounder) for the first time.
Potter Cove was entirely smooth and no ice was floating. So we schlepped our heavy equipment onto the zodiac except the transducer. The transducer was deployed on a floater and towed behind the boat. After some initial program configurations the system was ready to perform and start the subbottom profiling. To explain the instrument very briefly: the system emits two sound waves of different frequencies and these two create a narrow sound beam which is able to penetrate the bottom sediment in the Cove. What we get as a result is the visualisation of subbottom sediment layers in the inner Potter Cove. We achieved a high resolution penetration between 10 to 20 meters beneath the seafloor. It is very important that the main unit of the system is protected against any kind of water, so we figured out how to remote-control it with a laptop. We packed the main unit (by the way: > 50 kg weight) into a Zarges box and channelled all cables through a hole we cut in the box before. The remote-control laptop was located in another box which we could access relatively easy when we needed to change some settings (thus all the time). After a couple of hours, virtually no wind but some heavy snow showers the first transect lines (> 9 nautical miles) were shot and most exciting data were recorded.