I am not familiar with the Moodys but I doubt that the keel bolts are mild steel. Stainless is almost always used, monel might be used.
You may just have carbon steel washers or nuts on the SS bolts, my S2 came like that so I just inspected the bolts, they were fine, and put SS nuts and washers back on.
Good Luck
Gary
You may just have carbon steel washers or nuts on the SS bolts, my S2 came like that so I just inspected the bolts, they were fine, and put SS nuts and washers back on.
Good Luck
Gary