As a contribution to the Q&S II and B II modules of the ITMS, the ATMO-SHIP project aims to realize the measurement of atmospheric concentrations of the gases CO₂, CH₄ and CO with ICOS-ATC-compliant quality in the area of the German Baltic Sea coast. The project uses the results of the EU project RINGO, in which such a setup was realized on board the ICOS platform SOOP TAVASTLAND as a pilot project. The instrumentation will be adapted and initially transferred to the research vessel ELISABETH MANN BORGESE, whereby the control and frequency of data transmission will be greatly improved at the same time. The instrumentation will provide data over a period of one year and the transmission and data processing will be operationalized, probably directly via the ICOS ATC. Routines and algorithms for filtering interference data are to be established and further developed. At the same time, planning and preparation for the transfer of the instrumentation to the ICOS platform SOOP FINNMAID (Lübeck-Helsinki), on which the IOW also carries out corresponding surface water measurements as part of ICOS and where the system is then to be operated for a further year, will take place. Based on the data from atmospheric measurements and surface water measurements, the uncertainty due to the usual use of atmospheric mole fractions from fixed stations for oceanic flux calculations will be evaluated. Through analysis together with the ITMS, the added value of the atmospheric data for the tasks of the ITMS will be analyzed, also in relation to the preferred platform (research vessel with partially recurring voyages compared to a continuously operating commercial ferry). Based on this, a decision on continued operation (e.g. application for the establishment of an ICOS ATC station) will be made. In addition to the expected added value for the tasks of the ITMS, the results are also of great importance in the context of strategy development for the WMO Global Greenhouse Gas Watch (G3W) initiative.