Cannot get to the article, so:
https://www.msn.com/en-us/news/world/iran-warns-tankers-they...
What is to stop the ships from lying ? I wonder if Iran will do spot check of some ships to prevent this. And will boarding ships cause Trump to have yet another breakdown ?
Because ship displacement is really hard to disguise? It's probably like trying to sneak your friend in to the movies under your overcoat.
Lying about their cargo? Can’t lie about the weight … Probably the savings from lying about the nature of the cargo is not worth the risk of exploding..
Oil is heavy. The ship designs are known. You can tell approximately how full a ship is by how deep it sinks into the water/where the waterline is.
They can probably consistently lie by a small percentage and Iran let's them get the 3% discount as an acceptable loss.