If you have access to a 3d printer there are models on My Mini Factory and Wargaming 3d. Sometimes you can find preprinted models on Etsy or you could use a printing service.

An example:

https://www.myminifactory.com/object...-wrecks-230557

Here is a free file for 17th century ships from Henry Turner:

https://www.wargaming3d.com/product/...hipwreck-pack/

That said if you prefer metal minis then Langton has sinking ship models and rigging debris as well I believe.