3 ms·

Wouldn’t water have a lot more drag than wheels?

• AnimalMuppet 4mo ago
  I suspect that the GP's numbers are total, not per ton-mile of cargo (which, to my mind, makes them useless for efficiency discussions). They might make sense for discussion of the actual article, though.
• XorNot 4mo ago
  Yes but it's also buoyant. You can put a lot more stuff on ships, and increased inertia does offset the drag losses versus acceleration losses