re: Help - Boat Corrosion at Drain Plug

quote:

---

Definitely galvanic corrosion. It’s a little concerning that the plug is corroded and broken though. I would expect the hull to corrode to protect the plug so your plug should be almost perfect.

---

Yeah, but what are those screws made of? Brass will act as an anode to protect some stainless steel alloys and given the amount of adhesive/sealant between the brass fitting and aluminum hull, there might not be a good connection between the two, unlike with the screws and fitting.