Well, goodness! Nine ships and two half-ships have been burried under the Oslo mud since 1600 or so. Now they’ve been found, thanks to a highway tunnel project. They’re well preserved, partly because they’ve been in fresh water clay and not on the bottom of the sea somewhere. The biggest ship is 17 metres long.
This is what I get from this article at dagsavisen.no, which is in Norwegian and doesn’t have photos. I’m hoping that some news service with brains will cover the full story in English soon, preferably with lots of photos.
(Thanks to my local Norwegian expert for help me to understand parts of the dagasvisen article.)