In 1956, Anders Franzén located Vasa outside Beckholmen in Stockholm. In the same year, diving began at the wreck site.
Vasa broke the water surface in 24th of April, 1961, a few minutes after 09:00 in the morning, and the whole world watched.
There are many dates and times circulating regarding the salvage of Vasa, probably because the preparations went on for several years underwater.
Among the work that took place mainly during 1958–1959 was tunnels that were dug under the ship to get the wires in place. It was lifted in 18 stages to shallower water, closer to land.
You can read more about the exhibition ‘The Salvaging’ on the Vasa Musuem's website: https://www.vasamuseet.se/en/visit/exhibitions/salvaging