This intervention develops arguments in our book Capitalism and the Sea on the complex temporalities attached to capitalism's intense and peculiar relationship to the global ocean. Technological innovations like the steamship or containerisation plainly transformed the pace and intensity of maritime commerce, and aspects of the global economy. We take this further to argue that the very origins and periodisation of capitalism are connected to the global ocean; as will be our futures, given the unpredictable implications of the oceans acting as the biosphere's ‘heat sink’. We consider several stylised expressions of time at sea: deep-time, logistical-time, life-time, and revolutionary time suggesting that the ocean world as a geographical space articulates these in distinctive and contradictory ways
