let me give some answers to your above points.
... well, I suppose, your Storfidra is also a boat of about 40 years of age.
Signs of use and stress are normal. So, it is quite normal that there has to be done some work on a boat to bring it back to its initial strength. SO, don't see it the way that you 'have to pay' for something decided wrong - it is more the way to invest some more money to bring her back to old strength.
... I am not a boat builder nor have I any qualities to survey or judge the quality or functionness of a boat. And any evaluation has to be done one scene and cannot be done by pictures.
What would I do:
First: remove the wood from the beam and again take a look at the beam. Any dents, deformations or cracks?
Second: Your pics show that the inside as been painted white - so you don't se the original gelcoat. Check, if there has been done some plastering work on the beam or vincinity of it - a screwdriver helps.
If eihter one or both things are positive it really is better to ask a professional to take a closer look at the mast support system. Maybe he can then bring along a moisture meter to detect any moisture in the construction.
Third: stepping the mast and tighting the rigging also helps to evaluate the situation: then ask someone standing on deck to pull both main stays inward as you check below if you hear anything squeeking or cracking. This should not happen as actually the mast support system is constructed very solid!
So, if everything looks fine, nothing shows symptoms of stress and even under changing mast pressure everything looks and sounds solid, there should be nothing to worry about.
Taking again a closer look at the pics showing the mast step I noticed that some plastering work has been done around it.
What you should do in any case is:
- remove the aluminum mast step from the deck and sand down the whole gelcoat. That gives you a perfect view on how far any moisture intruded the GRP-layers.
- remove any other layers if necessary, if they have delaminated because of water and or frost.
- laminate new layers of glass mats to build up the original strength, using for example the WEST-Epoxy system. It is quite easy to use and brings good results when following the manual. If you are not familiar working with Epoxy and glass mats, it is easy to learn. But don't start you first trials on your mast support...
- finish everything up with a paint coat system - there are different marine paint companies on the market.
-finally you can bolt the mast step back in place using a good amount of marine
sealant (NOT the cheap stuff you use for the bathroom at home!) around the bolts to get everything water tight. Here it is also crucial to follow the rules: put the sealant on, put the mast step and bolts in place, but not yet tighten the bolts completely and squeeze out all the sealant. Tighten the bolts a day later.
... oh, please excuse if I am getting too much into details... it's just so much fun and rewarding to do this kind of work and end up with a wonderful, well restored own boat!
... you are right, Nausikaa, who started out to build up a nice site on the Storfidra, is no longer on the net. Too bad. So, actually there is no Storfidra forum I know of, the only site, that takes a little care of the Storfidra is 26' Storfidra
. It is in dutch language and rather taked care for the Midget-community.