PurposeThis study aims to investigate the moderating role of psychological capital (PC) and the mediating role of safety climate (SC) in the relationship between the perception of psychological well-being (PWB) and ethical climate perception (ECP) of yacht crews in commercial yachts.Design/methodology/approachThis study follows a quantitative approach. Data were obtained from a total of 339 yacht crews in Türkiye. The data were analyzed using SPSS 22 and AMOS 22 statistics package software.FindingsThis study uncovers the role of SC and PC in the causal relationship between the PWB and ECP of yacht crews who are, as tourism and maritime industry employees, expected to exhibit positive organizational attitudes and behaviors. The PWB of yacht crews in the work environment is affected by their SC and PC levels.Research limitations/implicationsAlthough the holistic model of this study is a strong one, there are some limitations. The sample includes only Turkish yacht crews in yacht organizations in Türkiye. Yacht crews work periodically under harsh conditions. We acquired the research data from the yacht crews who had experienced the challenging environment; hence, the findings are specific to the crews. Ethical perceptions and standards may differ across cultures; for this reason, future research on employees in different organizations may conclude with different results. The significance of this research lies in the fact that it tests a comprehensive model.Practical implicationsThis study can guide managers in finding ways to affect the PWB of crews. Ethical and safety climate should be taken into account by yacht organizations to improve the perceptions of yacht crews. The findings show that ECP and SC have a positive effect on the PWB of yacht crews. From this perspective, this study suggests that yacht organizations should involve their crews in their ethical decisions to foster an ECP. Yacht businesses should act consistently in all areas and adopt clear safety and ethical rules and procedures for yacht crews to follow to create a perception of ethical and safety climate.Social implicationsThis study contends that yacht crews, who face lengthy shifts and professional duties, are a component of the tourism and maritime industries. The findings indicated the necessity for more study on different perspectives related to the factors that impact PWB in the light of the employees. There are relatively scarce data on yacht crews and the relationship between their PWB, SC, ECP and personality constructs such as PC. This research shows that the PWB of yacht crews in stressful and demanding working environments depends on positive ECP and high PC through SC.Originality/valueThis study is the first to assess the role of SC and PC in the relationship between the ECP and PWB of yacht crews. It further aims to fill the research gaps and build on the tourism and maritime literature on yacht crews and PWB, and climate within the tourism and maritime context.