The Juliana Bridge accident

[LONDONER]

Yiou watch and all the time you're saying "No, no, no". Someone made a bad calculation:

[meridannight]

yeah, i heard about that.

two cranes on separate pontoons lifting that thing was the mistake there. those were not pontoon cranes. those cranes were meant for use on the ground, they were just loaded on the pontoons. you have a shifting weight center and you're on water, a surface that is not by itself horizontally or vertically stabilized (you need to correct for this)....what the hell? that was a completely stupid idea from the beginning.

you don't ever lift a weight like that, because it would need precision steering of the pontoons to keep the center of weight in balance. such precision is not possible. it would also need simultaneous precision operation of both cranes. you need to be stable in the vertical and horizontal plane in order to do that. this was obviously not possible in a scenario such as this. i don't understand how anybody thought this was doable.

pontoon cranes need to be counterbalanced in the lifting plane, or 'anchored' to the ground.

this is what a true crane pontoon looks like, by the way:

[CellarDweller]

oh damn, that's awful