Using R/V Thalia and two research aircrafts (ATR42 and Piper), the team led by LOPS and CNES will perform a wide range of surface current and wave measurements. But what his really the "surface current" and how does the current changes from the top meter to 15 m depth, how are these different currents sampled by airborne or coastal HF radars? Here are some of the questions that will be addressed, and this is why we are deploying a wide range of drifting instruments. On this picture you can see a rigid inflatable boat that will be used for deployment and recovery with different drifter tupes. What looks like folded umbrellas are indeed "anchors" that unfold to have a maximum grip on the current at a given depth.
More details on the SKIM project web pages: https://www.skim-ee9.org/The-mission/Campaigns