Hello all first post here

I have recently bought a small yacht to refurbish ,it is a Hyundai 5.7 made by a Korean manafcturer that is not in business anymore as far as I know.My problem is the swing keel requires repairing ,I have some drawings of the keel but not all the information I need to repair the keel .By looking at the photo does anyone know a similiar type of swing keel design that I might be able to use as a guide.Both the main front bolt and aft bolt have sheared off ,I am not sure what the front bolt is for ,I think it is some kind of a locking mechanism.

I am located in Borneo and there is not much help to be found here.