An intriguing shot Martin, thanks for sharing it.
Part of the stability 'answer' must lie with the 462 gross tonnage (which will equate to a significant proportion of the available ballasting space) and the low lifting capacities, as recorded by Peter Hartung- thank you for that info.
However, I would agree with tvtech's opinion of not being a willing operator of this unusual machine!
Regards, Rick

Captain Ted

I am a rookie when it comes to "ships"
There is no way EVER I would be prepared to sit and operate that crane from such a height....with such a small base...

It all looks wrong.

Regards,
tvtech

One wonders why the arm is up while moving, one would think that it is placed in the rest podest on the back and shows diagonal downwards which increases the stability.
With the arm up the whole sherleg looses a lot stability and is much quicker prone to capsising.

Thank you Peter

Regards,
tvtech

Incredible shot of this "something is top heavy vessel"

A really awkward looking floating barge....

Maybe like an Elephant with the feet of a mouse????

Obviously, no sharp turns while towing allowed.

WOW !! I can imagine the results of this if the ballasting was incorrect !