Chris
As well as rain water getting in if the boat has been sitting for years it would have a build up of condensation. Personally I would do a taste test to see if its salty. but I expect it will just taste rancid.
Don't forget to replace all the rigging before you go out or the mast will come down!.
I've no doubt it would taste rancid!
The rigging has been stored inside a garage - I assume it will be ok?
