Looks like some water
intrusion around the windows too.
Apart from the teak on the deck
, if the GRP is sandwich construction there could be core rot
, so check for sponginess/soft areas. It's not terminal, but it is a big job to fix.
Generally, some Taiwanese built boats of that era had black iron tanks
that should have been replaced by now.
It's a good looking boat and if all the fix up stuff has been done, make a low offer, subject to survey
, and see what happens. Then get a surveyor
(not one recomended by the broker) that knows boats of this era to check it out.
You could end up with a damn nice boat.