As Paul said, you can load containers aboard Vermaas or Sherpa using the Container Crane. There can only be one crane in the mission, and it can’t unload.
While only a few vessels can have visible cargo, you can load containers on any vessel—including the jetski. The only animation is with the Container Crane.
You can unload visible containers onto a wharf, or lose them overboard to float on the sea.
Marty
The reason you don’t see the draft change is the same as the reason you don’t see a semi-sub like Fjel, tides, canal locks with water level change, etc.—the present architecture of the simulator does not permit it. Changing the draft to truly represent change in lading would require that the ship dynamics also change.
Hopefully, the new simulator in 2009 will have those capabilities.