Cauldron or diving bell?

[Smithbrown]

Cauldron or diving bell? https://www.livescience.com/archaeo...sed-to-salvage-treasure-from-a-sunken-galleon

 

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[Red_desert]

Makes sense and trapped air inside bell will make it a much lighter weight underwater.

 

[lukdiver]

My brother told me the divers (usually slave black's) won their freedom if they recovered a silver bar.

 

[releventchair]

Upside down hot or bath tub used to sink.. Multi use. Why not?

 

[ARC]

Neither IMO.... saw this in person once.

Gotta love the imagination though... lol... "Fish stew"... heh

And btw... those are not rivets as proclaimed... but indents.