The aim of the cruise was to carry out experiments and collect data to support the projects "Seabird bycatch in coastal purse seine fisheries" (FHF 901751) and "Developing and testing methods to mitigate interactions between fisheries and whales" (FHF 901681). During the cruise we carried out experiments using acoustic deterrents on whales and studied the interactions between seabirds and the purse seine. We also had some opportunistic experiments with using sound and light deterrence on seabirds. In addition, thermal binoculars and a light sensitive camera were tested and evaluated as monitoring tools in the dark. Despite a short cruise we got some preliminary results from two purse seine catches. During the experiments few killer whales were observed around the fishing boat, while far more observations were made on humpback whales. The sound signals had no or a very small effect on humpback whales. There is therefore a need to further develop signals that are effective, also in long-term and repeated exposures and without causing harm to the whales. There is also a need to ensure that the sounds do not affect herring behaviour. The results from the cruise further indicate that the risk of seabirds getting entangled in the net is highest in the end of hauling and before pumping the catch. Sudden light and sound effectively scared the birds out of the net and should be further investigated as mitigating methods. The experience with using the light sensitive camera and thermal binoculars for monitoring in the dark was good. These tools will be useful in future fieldwork. The cruise gave us valuable experience for planning and conducting field work in 2023/2024 and further developing mitigation measures into practical tools for the fishing fleet.