Re: Edel 665 ...crack in deck / ceiling
Whoa there. If those nuts are the ones holding that shrould mount and it looks as if they are, then you have a boat with a SERIOUS structural failure.
As well as fixing the visible evidence and that will need more than a bit of filler plus a glued on handrail, you need to investigate the other side as well.
Also from Sailingdog
It has a partially cored hull IIRC, and you need to make sure that water hasn't gotten in and caused any delamination. I don't believe the core in the hull will rot as I believe it is PVC-based foam.
The cross beams that connect the hulls to the bridgedeck are aluminum.
Corrosion is going to be a problem at the fasteners, since I believe the fasteners are stainless steel. I personally prefer cats that have the hull molded as a single piece... but that's just me.
The forestay connects to crossbeam that is also supported by a "dolphin striker" and that needs to be in good shape, otherwise the forestay support can fail.
Rudder shafts on this boat were aluminum originally. I believe the bearings were bronze... this is a galvanic corrosion problem in many cases, and should be checked closely.
I believe the deck is also cored, and needs to be checked for any signs of water intrusion or delamination.
Also, I believe the cabin soles are fiberglass and plywood, so you may want to check the sole for any water intrusion that may have rotted the plywood. I don't believe the plywood was fully encapsulated in fiberglass on these boats.