Pure car and truck carrier (PCTC)
The ro-ro that moves the world's cars is also the ro-ro that would move an armoured brigade. A vessel class whose civilian and military readings are almost the same ship.
Dual-use reading
Liner service between vehicle plants and import markets; earnings driven by vehicle exports (China's in particular) and the ratio of deep-sea to short-sea deployment.
Strategic sealift for wheeled and tracked vehicles. Strengthened decks and a heavy stern ramp make a PCTC a roll-on/roll-off transport with no conversion; the constraint is not the ship but the port at the far end.
A PCTC is a box with a ramp. That is not a criticism: the box is the most efficient shape for carrying vehicles, and the ramp is why it takes hours, not days, to load. Everything that makes the class useful to a car maker makes it useful to an army.
Civil reading
The fleet is small — a few hundred deep-sea ships — and until recently was old. A wave of Chinese vehicle exports drove a newbuild boom and record charter rates, then a correction. Read the class through the export figures and the orderbook.
Military reading
Most strategic sealift arrangements list PCTCs and other ro-ros first. What limits their use is port infrastructure at the destination, the availability of stevedoring, and whether a civilian crew will sail into a contested area. Those are the questions a dossier should prompt — not "can it carry tanks?", which it can.