Sweden, Stockholm, Vasa-museum

After a few minutes walk from Dyktankhus you will find yourself in the Vasa museum. It is a place well worth a half-day visit. The recovery of the Vasa warship involved a lot of diving. The earliest dives were done in the beginning of the 1660’s when Treileben and Peckel used freedivers and a diving bell to recover cannons from a depth of 30m. Out of 60 gun barrels more than 50 were recovered. An impressive feat!

The wreck was rediscovered and dived in the 1950’s. It was then recovered from its watery grave in a lengthy diving operation by Swedish navy divers led by Per Edvind Fälting. Channels had to be dug under the wreck for the hoisting slings.

A replica of the imagined diving bell of Treileben in the Vasa-museum. The bell can be entered and from the pictures on the wall one can see how far up the water raised at a depth of 30m.
A nozzle designed by Lars Zetterström allowed divers to dig six tunnels underneath the Vasa ship. Hoisting cables were then run through these tunnels. The nozzle sent a water jet forward while also creating a secondary reverse water flow pushing sediment back.

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