Fire | Collision | Engines | Impellers | Neglect | Outdrives | Stray Current

Stray Current Corrosion

These photos show the catastrophic damage caused by "stray current". In this instance, DC current was sent into the vessel bonding system when the positive wire from the capacitor at the alternator chafed through and grounded against the engine block. This vessel, a 1984-32' Sabre sailboat, had just been surveyed out of the water for pre-purchase and all of the underwater metals were in good condition. On the new owner's maiden voyage, this damage occurred. Over a period of approximately two days, two bronze thru-hull fittings, the prop shaft, propeller and rudder were destroyed by Stray Current corrosion. (220301)

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