A cannon chainshot

[fernando]

Originally Posted by midelburgo

... I remember at the Copenhague Tojhuset they have a machine to make red hot shot. It has a couple of rails in spiral around an oven.
I think this was for a fort, not to use on board, but they existed too...

Maybe not the one you saw, but we may see a mobile one operated by the same Royal Norwegian Navy (circa 1860).
The ones for fortification facilities are pretty massive, like this French one at Fort-la-Latte and the other at Fort Mc Allister US.


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