This thesis addresses how oilmen's masculinities are constructed and enacted on Point Delta, a remote oil drilling platform in the UK North Sea. The research explores how different notions of masculinity influence safety and risk practices. Much existing research is based on R.W. Connell's popular theory that a single hegemonic masculinity governs the local level of society. Some studies suggest the presence of multiple masculinities and present salient additions to theory. Despite this, there exist several opportunities to make contributions to existing concepts. Importantly, more ethnographic knowledge of masculinities in dangerous workplaces is required to make further scholarly progress. This study is based on a document analysis of organisational formal safety policies, seven interviews with policy-makers located onshore, and ethnography conducted offshore by interviewing thirty-five oilmen. Several contributions are made to Connell's theory, as applied to understand men's institutional masculinities in dangerous workplaces. Firstly, a pathway to discern the role of policy in shaping men's local masculinities is conceptualised. Secondly, a method is put forward for understanding men's displays of masculinity in ways that do not immediately imply hegemonic membership. Thirdly, the descriptor 'hegemonic' is reinterpreted by returning to Gramscian theory. This allows multiple masculinities to be framed as locally dominant. These additions reimagine popular theory in a manner befitting the lived experience of men in the Point Delta oilfield. Further studies of masculinity in hazardous locales may make use of these notions to develop new directions and theory within the relatively recent sociological sub-field of men, institutional masculinities, and risk.