I was suprised to learn that attempts to raise the Vasa were made immediately after she went down. The unfortunate captain Söfring Hansson was tasked with coordinating the effort. He likely was grateful for the chance to sort the mess before King Gustav Adolf came visiting in a mood as foul as the letters he had written. "Sorry, your Majesty, she got a bit wet, but we'll give her a brush up and she'll be as good as new, I promise," would have sounded nicer than pointing at the slanted mast tops still visible in the harbour. "There she lies."
Salvaging technology in the 17th century worked like this: Two ships, often just hulks, were placed on both sides of the sunken ship. A number of ropes were sent down and hooked to the ship with the help of special anchors. I could not find details about the process but it may have involved freedivers - we'll later see that those could reach the ground where the Vasa lay. The hulks were then filled with as much water as was safe for them to hold so they would lie deep in the water, the ropes tightened and the water pumped out. When the hulks or ships rose again, they would take the sunken ship up with them. The process was repeated until the wreck could have been transported to shallower waters and then further until she was fully raised above water level. At this early stage, the timber of the Vasa was not yet waterlogged, so the method might have worked.

I'm a blogger from Göttingen, Germany, with a MA in Literature and History, interested in everything Roman and Mediaeval, avid reader and sometimes writer, opera enthusiast, traveller with a liking for foreign languages and odd rocks, photographer, and tea aficionado. And an old-fashioned blogger who refuses to get an Instagram account.