Or you could stuff more than one container on a boat. The Emma Mærsk, one of the largest ships, has over 420,000 m^3 of space, which could hold 81 ZB (8.1 million PB) if Retric's (sibling) comment is correct, moving data at just over 1 Eb (exabit) per second. According to Wolfram Alpha, that's big enough to hold the entirety of human knowledge 7000 times.