Light weight composite reinforced pressure vessels are manufactured in Saint John, NB by FPC Inc, to be used for storage or transportation of compressed natural gas (CNG.)
One of the systems they make is mounted in ISO container type frames for easy handling on trucks and ships.
These two units arrived at the Halterm container terminal today for export (they were not carrying gas.)
Black's Transfer of Saint John, a specialist dimensional load carrier, used two of their Peterbilts to haul the units on standard flat bed trailers. By the time I took these pictures, the securing straps had been removed, so that the units could be removed by straddle carriers or fork lifts inside the terminal.
Expect to see more of this type of gas transport in future.