It's cool to see how much the older double bass and violin have been repaired. Those square/flat pyramid pieces of wood are cleats, which were added by a luthier to repair and secure cracks.

Here's a good step-by-step article on how cleats are made and installed, from stock to installation: https://trianglestrings.com/making-installing-cleats/

The repairs are hard to discern from the outside...

https://m.facebook.com/photo.php?fbid=10162184681342501&vani...

The only pic I could find.

As the son of a mariner who was born a few miles from HSM Victory, I feel honour bond to point out that HMS Victory is not techically a galleon.

Honour bound is the best kind of bound.