From the perspective of international youth work practice, the project “on one wave” aims to create an inclusive, safe and experience-based learning environment in which young people can develop key personal, social and intercultural competences. The focus is not merely on organising an exchange activity, but on designing a pedagogically structured learning process that is closely connected to the realities of young people’s lives and enables them to discover their own resources, take responsibility and experience themselves as capable of action. A central objective of youth work practice within this project is to open up access to international learning and encounter spaces for young people, particularly for those with fewer opportunities. Through its consistently inclusive approach, the project seeks to overcome structural barriers that often exclude young people with physical impairments from mobility programmes. Participants are meant to experience that international youth work is accessible to them and that their individual abilities as well as their support needs are equally recognised and valued. In this way, the project strengthens the principle of equal opportunities and implements inclusion as a lived practice rather than as an abstract concept. On an individual level, the project aims to sustainably foster young people’s self-efficacy and self-confidence. Taking part in the inclusive sailing trip and other challenging yet well-supported activities allows participants to explore their own limits, take on new roles and assume responsibility for themselves and for the group. From a youth work perspective, such experiences are essential, as they trigger informal learning processes that go far beyond the acquisition of cognitive knowledge. Young people learn to make decisions, support one another and deal with uncertainty—competences that are crucial for both personal development and active participation in society. Another key objective is the development of social and intercultural competences. Working in small trinational groups, navigating together on board and cooperating in everyday tasks creates an intensive social learning process. Participants learn to perceive, accept and constructively translate differences in language, culture and physical abilities into joint action. The deliberate use of multilingual animation and linguistic mediation supports this process and enables all participants to contribute actively. From a youth work perspective, this significantly contributes to reducing prejudices, fostering empathy and strengthening solidarity within the group. In addition, the project aims to raise young people’s awareness of social and environmental responsibility. The environmental workshops with Echo-Mer, as well as the sustainable approach to mobility and catering, are integral parts of the pedagogical concept. Participants are not only expected to gain knowledge about the protection of marine ecosystems, but also to explore and practise concrete courses of action. Youth work understands environmental education here as a participatory process that builds on personal experience and encourages young people to engage in sustainable practices beyond the duration of the project. Finally, the project seeks to strengthen participation and co-creation as core principles of youth work. From the very beginning, young people are actively involved in shaping the programme, in reflection processes and in documenting the project, in particular through the joint creation of a trilingual logbook. This makes their perspectives visible and ensures that their voices are taken seriously. From a youth work point of view, this fosters democratic competences, a sense of responsibility and a feeling of belonging. Overall, “on one wave” is conceived as a practice-oriented example of how international youth work can be designed in an inclusive, competence-based and sustainable way, supporting young people in their development as confident, solidaristic and engaged members of society.