8 Short Cruise Report, RV ATAIR, Cruise 067I041-1, Bremerhaven – Thybor?n – Aberdeen, 22 Jul – 14 Aug 2025 On 03 August at 08:50 UTC, RV ATAIR was towed to Nordre Mole in Thybor?n, Denmark, to complete leg 1 of cruise 067I041-1. The port stay between 03 and 06 August was used for the exchange of crew members and scientific participants. The vessel was originally scheduled to depart from Thybor?n on 05 August. The departure was delayed due to the storm system Floris hitting the western coast of Denmark. High winds and rough seas did not allow for a punctual departure. The scientific mission was resumed on 06 August, 09:50 UTC, when the vessel left Thybor?n in order to start leg 2 of cruise 067I041-1. The sampling program of the radioactivity group was finished with the arrival in Thybor?n. Sampling of pesticides started on leg 2 after leaving Thybor?n. The 57°N section began at its eastern end with a repeat visit to station GN039 (#065/GN039) on 06 August. Heading west, the vessel crossed Danish and UK waters and reached the western end of the section at station #080/GN034A on 08 August, which was also visited for a second time during the cruise. Also, station GN045D at the latitude of 58°N was visited for another time (#081/GN045D, 08 August). All repeated visits served to investigate the hydrographic conditions before and after the storm system had passed through the region of investigation. Back at 58°N, the western end of the section towards Moray Firth that was not addressed during the first visit at 58°N was sampled. On 09 August, RV ATAIR continued station work along the eastern side of the Orkney Islands to start sampling at the western end of the 59°N section the same day (#086/GN046A). The fourth and last surface drifter, EDDY 2064, had been deployed on the previous station (#085/GN046B). The eastern end of the section off Stavanger, Norway, was reached on 10 August. Since leaving the Orkney side of the section, wind and sea state had become much more favourable (see Fig. 2). Having finished station work at #097/GN051 on 11 August, course was set again towards the west, following the latitude of 60°N. The southern tip of the Shetland Islands was reached on 12 August (#106/GN053A). Between 12 and 13 August, RV ATAIR passed through the Fair Isle Strait, circumnavigating the Orkney Islands from the west. The station work was completed at the final station of the cruise, #114/GN057A, on the western side of the entrance to the Pentland Firth in fine, sunny conditions. After midnight, the vessel passed eastward through the Pentland Firth and began approaching the designated port of arrival, Aberdeen, UK. The continuous acquisition of underway data stopped shortly at 09:15 UTC on 14 August 2025, when the vessel reached the 3 nm-limit of UK waters off Aberdeen. This marked the end of the scientific mission of cruise 067I041-1 with RV ATAIR. The vessel arrived at the Aberdeen pilot station on 14 August at 15:00 UTC, and the pilot was brought on board. Shortly before 16:00 UTC, the vessel was finally towed to Blaikie’s Quai in Aberdeen, UK, marking the end of cruise 067I041-1. The port stay in Aberdeen was used for the disembarkation of the scientific participants and crew members of cruise 067I041-1, as well as for the respective embarkation of the members of the subsequent cruise 067I041-2 (chief scientist Dr. Berit Brockmeyer, BSH). The time was also used to remove or install the necessary laboratory equipment and instruments.