the Vasa - largest warship there was in 1628 - rolled over and sank as it left
the dock for the first time.  It was raised in 1961 and held untold treasures.
They laser tracked its entire hull and found that one side of the hull has about
10% more wood in it than the other.  They also found 3 carpenter’s rules that
had fallen into the bilge during construction.  Among the 3 there were 2
different inches.  They havent drawn any conclusions.

Ed Minch