Bobbysocks

Not as important but these are a few of the cracks I've found inside the hull and currently I'm thinking to sand them down and use either filler or CSM and resin to reinforce them but again, my experience is limited to books and videos, etc so does this sound like a good idea to anyone else?

I could really do with some advice on how to handle a specific repair and/or contact details for any fiberglass engineers in or near Stalham. I've recently purchased a Kent 26 motor-sailor that's currently dry-docked at Wayford Marine Ltd. I'm told she hasn't been out of the water in some time and as such needs a fair bit of TLC including a fresh Gelcoat, a few dings that need filling and some ominous-looking cracks on the inside of the hull. I have no experience working on boats but I've done a healthy amount of reading and am confident I can do the Gelcoat and small jobs myself, however I would ideally like the input of someone a bit more knowledgeable than myself before I start making changes and there's one particular repair that I believe is way out of my depth and will require a professional. I'm not sure if this is part of the original build or if someone has done a repair but whatever the case the metal's pretty degraded, particularly below the waterline and as such I would assume it needs removing and replacing but have no idea how: