The RV Lance was used during the SMOS-ice campaign to validate SMOS’s suitability for delivering information to measure thin ice floating in the polar seas accurately enough for forecasting and ship routing. The campaign, which was carried out in March 2014, involved gathering vital ground-truth information with by an electromagnetic sensor suspended from a helicopter. The helicopter and team were carried on the RV Lance, which sailed into the polar sea-ice from Svalbard, Norway.