As I understand it, 'tabbing' is the attachment of the bulkheads to the hull
. Fibreglass 'tabs' are used. A 'tabbing issue' may mean that the bulkhead is becoming detached from the hull
. If the bulkheads in question are structural, it's a very serious issue indeed, requiring attention.
There are three factors I can think of:
1. A previous owner has damaged the tabbing in some way.
2. Some major trauma has damaged the tabbing.
3. There is some doubt about the build quality. (Even on a forty-year-old boat
, the structural integrity should be sound.)
The problem can be fixed. I would get a professional to repair the damage. First of all, I would get a reputable surveyor
to check the whole boat thoroughly, there may be other problems if, for instance, the boat has been dropped from a hoist at some time.
It's also possible that the bulkheads in question are non-structural, and repair is an easy job. A surveyor
will tell you. If there's an owner's group for that type of boat, that might be helpful too.