How can the 12v Train 7823 Container Depot be used to load container ships as per Lego Catalogue As I kid I was always confused by the description of the 7823 Container Depot
 in the Lego Catalogues:


  ..."The crane can be raised so container ships can be loaded."


An example can be seen in this scan of a 1988 UK catalogue.

Now as an AFOL I am still confused by this. I still have the set from my childhood and although the end of the crane gantry does hinge up, it doesn't give the crane any extra reach. I suppose it is possible that the train track could be removed and the base plate be placed right next to the 'dock side' to use the crane to load/unload ships, but even then is it really necessary to raise the end of the gantry? There is already a lot of height clearance even without the gantry end raised.

Can anyone shed any light on what the Lego Group meant by this description?
Whilst there is quite a bit of clearance on the crane as it stands, the Container Ship (4030) was quite a high sided beast - although you can see that better on the catalogue page:



I would think that a bit of extra height from the hinge would be useful to make it over the edges of the ship - assuming you haven't raised the crane's base.

The alternative answer is that they are trying to make the model more real-world accurate, where the cranes lift up as the ship comes in, and then go back to flat to load: