Position: 89° 09.6' N, 57° 53' W, temperature - 34° C, air pressure 1010 hPa, wind 5 knots from NNE. Ice drift 0.1 knots towards south. Shooting seismic reflection, but recovered the airgun in the afternoon. Audun made GPS survey of the leads and pressure ridges in the area of our camp. We inspected the fuel cache and discovered a crack had made a fuel bladder fall into the water. We secured the bladder and pumped all its content into an empty bladder. Started to disconnect the hovercraft, but the skirt control did not respond. As the temperature had fallen to - 34° C, we put heat overnight to warm the hydraulic reservoir.