On: How the Fehmarnbelt Tunnel is being built [video]

[jaclaz]

Yes it must be lost in translation somehow, in Italian also "cassone" is both the "diving bell" thingy and the "sinking box".

The Mose in Venice (though it is a sort of foldable dam) has inside a tunnel for maintenance and it was built in a similar way:

https://www.mosevenezia.eu/cassoni/