The changing strategic significance of submarine cables: old technology, new concerns

The strategic significance accorded to submarine cables has never been a static concept, but it has been homogenous: a focus on protecting cables from external threats. This article argues that because submarine cables have long had strategic value, they provide a means to examine the emerging concept of strategic technology competition between the United States and China. To do so, this article examines major changes to the submarine cable sector since 2015, including the success of Chinese company Huawei Marine, and US and other western government interventions in several cable projects. It characterises the strategic considerations exhibited by submarine cable activity in that period – influence building in third countries, a changing perception among the US and its partners of threat and protection priorities, and closer attention to cable security and surveillance considerations – and compares them with the traditional strategic values attached to submarine cables. It concludes strategic concerns about undersea cables includes a new concept: the construction and installation of cables as a strategic threat, and which adds complexity to a sector in which it is difficult to project influence. This article seeks to make a contribution to scholarship on strategic competition in emerging technologies.