I don't know the answer to your question but I will pass on a nasty story I heard on the Gerry Ryan show last year:
Guy imports car from Japan, goes to the compound at the docks, sees the car but can't get it out yet as paperwork has to be sorted.... goes back sometime after and car is gone and nobody at the docks can help him! Basically he gets stonewalled by security etc.
So I would be inclined to, if you get to see your car, try and get close enough to take a photograph on VIN numbers etc...
Don't want to be a scaremonger but I felt really sorry for the guy and no doubt the docks have a juristiction all of there own.