I do not think this is a boat anymore. I think it has crossed the line into being a boat-shaped-object...Used to lure the unwarry into spending their hearts out for no real rewards.
I have two guesses and one certainty about this boat.
Guess number one, An earlier owner has turned it bannana shaped by having the shrouds so incorectly tightened that one side has actually pulled out of line and the glass cracking everywhere is a consequence. Does the companianway hatch slide easily and bear no marks of "adjustment"(chisel or angle grinder)? Does the front hatch open cleanly and bed down on its seals properly?
Is the mast foot area on the cabin roof also cracked and crazed in a radiating pattern form the mast foot?
Turn away now and run!
Guess number two: The boat was made "wrong" in the first place. Sometimes it just happens with small budget builders. he workshop is not climate controlled and sometimes the weather just means the glass does not "go off" properly and is extra brittle or does not bind the way it should.
Sometimes an apprentice mixes the resin in incorect proportions and there is no way to spot the error until after the hull is laid up (and sometimes not till way after).
At this point many a small builder has been known to either "patch" the craft and hope for the best, or if they are honest, sell it as a "second" for (hopefully) the cot of materials.
These boats, as a rule, go on to live very sad lives of being patched and repaired by progressively less and less skilled owners as they are bought enthusiastically by a bargain hunter and then sold for usually less to the next sucker by a now wiser and sadder (and poorer) owner.
Do you want to be the next in this sad chain?
These boats NEVER come up to the standard of their properly built brothers, but ironically, often end up costing several times as much when all of the "repairs" by all of the owners are taken into account.
Enough of the guesses, now for the certainty.
Based on the pictures you have provided alone, it is more then clear that the level of maintanence and repair of this vessel has been from poor to woefull. You will in effect be buying everyone else''s incompetence and then need to somehow undo them or learn to enjoy playing russian roulette with your sailing (trusting that someone else''s repair, which looks like crap and is as amateur as hell, will hold together long enough for you to get back to shore.) Can you really relax and enjoy sailing under these conditions?
You do not need to buy a pristine boat with nary a smudge of winch grease out of place, there are real bargains to be had out there and boats that can be brought back to life with a little TLC (or even major amounts of it)...but the important factor should be that the effort and money should be justified by the result. And that reall satisfaction should hopefully be gained along the way as well as after completion. I do not think this hulk offers either hope much chance.
You could sneak off with the self-tailing winches though!