This ¼" O scale switcher weighs in at a little over 13 pounds:
And with eight-wheel drive should pull the plumbing right out of the station:
It is almost all cast bronze.
The relay tripped; not knowing how many pence in a pound, I thought that it might have dealt with the price! But, as I said, the relay finally tripped! 😉
And the U. S. S. COLE (DDG-67) after a suicide-bombing attack in Aden. The heavy-lift ship MV BLUE MARTIN brought her back to the US. There is a photo partway down showing the COLE on the BLUE MARTIN.
https://en.wikipedia.org/wiki/USS_Cole_(DDG-67)