An interesting form of calculated risk.
To prevent the vehicle ramp from hitting the hatch coaming, to bring the ship out of trim like that is quite unusual.

But when I look at the picture, I think it's not unloading, but loading the ship.
For unloading, this ramp system would hardly bring any time advantages. It would make more sense for loading.
That's why I think the trucks drive onto the ramp that extends over the hold and dump the load. The backhoe is then used to distribute it in the hold.

Since there is this special loading ramp, it is probably a standard procedure.
It should be a pleasure to work with the sloping position.

Hi WUKA,
With all respect I hope the responsible people for this fine loading procedure will not read your comment, they might come after you!
What exactly is wrong here except that you might not have experienced it? Hatch covers and crane jump out of their guides? Hydraulic cylinders fail? You mean the hatches were opened with this list alongside (?) or rather before docking and controlled ballasting to fit the ramp?! I hope you worked on a ship's deck before?
And disregarding any potential threats are only with people who don't know what they are doing. All others calculate wise, otherwise shipping in general could and would have never been functioned.
Best wishes, Manfred