Cruise Report, RV ATAIR, Cruise 067I033-1, Bremerhaven – Thybor?n – Aberdeen, 23 Jul – 15 Aug 2024 9 4. Narrative of the Cruise RV ATAIR left its berth at Kohlenkai in Bremerhaven/Germany on 23 July, 2024, at 11:00 UTC and subsequently passed the Bremerhaven sleuth in order to start its cruise 067I033-1, the North Sea Summer Survey of 2024. The scientific mission of cruise 067I033-1 started in the late afternoon/early evening hours of the same day with a test station (#001/Test). Continuous acquisition of underway data was switched on after reaching station #002/GN003/ELBE1. The course was set to the west, initially following the latitude of 54°N. Having finished water sam- pling at station #004/GN007, the first out of eight surface drifters (EDDY 2089) was deployed. On 24 July, the vessel entered the Dutch EEZ and subsequently worked at nine hydrographic stations (#005/GN007A-#013/GN013N). At station #008/GN009, the vessel turned south to reach the southernmost station of the cruise near the southern entrance to the North Sea (sta- tion #013/GN013N, reached on 25 July). The vessel entered UK waters for the first time on 26 July and worked on stations #014/GN014 to #018/GN009S on a northward course to return to 54°N and complete the measurements at this latitude (#020/GN017A, 27 July). On 27 July, measurements started at the western end of the 55°N section at station #022/GN018A. Due to the construction of a large wind farm at Dogger Bank forcing the vessel to deviate from its intended cruise track, the location of the former station GN019 could not be reached anymore. Instead, a more northerly position was chosen and is now referred to as GN019N (station#025/GN019N, 28 July). UK waters were left shortly after the completion of station #026/GN019S on 28 July, and Dutch waters were reentered. On 29 July, the vessel reached the eastern end of the 55°N section (station #033/GN025) and headed north to con- tinue measurements along 56°N in a westerly direction. The easternmost station #036/GN026 of the 56°N section was sampled on 29 July in Danish waters, and the westernmost station #046/GN033A in British waters was sampled on 31 July. The 57°N section began at its western end (station #048/GN034A) on 1 August. The vessel headed east, crossing UK and Norwegian waters, and reached its eastern end at station #062/GN039 on 3 August. Recording of underway measurements was temporarily stopped after this station. So far prevailing general weather and sea state conditions had allowed to arrive quite early in the vicinity of the port of Thybor?n, Denmark. Thus, between the afternoon of 3 August and the noon hours of 4 August, the vessel dropped anchor about 20 nm off Thy- bor?n. On 4 August at 13:00 UTC, RV ATAIR was towed to Nordre Mole in Thybor?n, Denmark, to complete Leg 1 of Cruise 067I033-1. While in port, the crew and scientific participants were changed. The subsequent departure was delayed due to a malfunction in the vessel's X-band radar. As the continuation of the cruise without using the X-band radar was not permitted, a repair service had to be organised. On 8 August, a Kongsberg radar engineer arrived from Norway and carried out the necessary repairs and switch of radar components. The scientific mission was interrupted until 20:55 UTC on 8 August, when the vessel left Thybor?n to start