Bridging international history, political economy, and the history of technology, the papers on this panel explore steam, carbon, and labor infrastructures in the Pacific during the century prior to the Second World War. Governing how people and things moved, new and costly energy and transport systems shaped regional geopolitics and economies. Focusing on the building and operation of these systems, these papers analyze the work of globalization at sea. By recovering the pre-WWII Pacific as a critical site of industrial production that engendered processes central to the current global system and by emphasizing shipping as a site of industrial enterprise, the three papers depart from traditional narratives and invite scholars to consider how contests over marine pathways shaped the modern world. Taken together, they offer an infrastructural history of globalization.