This study aims to provide new insights into the connections between maritime history and global history. It demonstrates the significance of maritime activity as a conduit of global exchange by examining local, national, and international interdependencies and trade networks, and a broad range of time periods, geographical areas, and various sub-divisions of maritime historical research. It is composed of ten essays, with an introductory chapter and concluding chapter. The first five essays discuss the effects globalisation on shipping in the early modern period; the following three discuss maritime transportation and the economics of industrialisation from the nineteenth century to the present day; the next discusses the impact of global entrepreneurialism on maritime history; the penultimate discusses the connections and variables between maritime and global history; and the concluding chapter examines the theoretical assumptions surrounding the two disciplines, using the globalisation of Early Modern Spain as a case study to do so. The study demonstrates that the core strength of maritime history is its essential place in global history, and that the process of globalisation began at sea.