Nope. Corrosion can be hidden (Purposely!)
Due to bad corrosion and many trials of coatings on metals for one item open to sea, fresh water and all in between, the staff 'painted' over corrosion just before inspections. Eventually pain shell no innards. Replaced metal with wood( yes, a hard wood Lignum Vitae); it worked. Worked for many years between replacement versus 2~3 years for coated metals.
Biting the hand that feeds IT
