Rusty keel bolts
Hi Carl -It's not unusual to see rust on keel bolts, especially in older boats and those with standing water in the bilge. Are there any signs that the keel bolts need tightening or are loose? Try cleaning them up and look for any signs of movement when the boat is hauled out. If not, then you probably have nothing to worry about. If you see cracking along the keel to hull joint, you'll then need to consider tightening or replacing the keel bolts. There are numerous ways to get a rusty nut off, but they usually require lubricant and a lot of force. Make sure you have a problem before you try to fix it!Best,Trevor