Protecting aluminum boats from salt water corrosion. as you can see, building an aluminum boat for salt water takes thought. the right alloys must be used, welding must be done just right, and parts must be carefully assembled. protecting aluminum boats from salt water corrosion. interlux.. The effects of saltwater on aluminum boats unless it's moored next to a boat with a motor. a wall of cathodic protection. since not all aluminum boats used in saltwater are rowboats, it's necessary to impose a wall between the aluminum boat hull and the steel outboard motor. since you don't want the aluminum boat to act as the anode in this. Corrosion. what is it? corrosion, partial or complete wearing away, dissolving, or softening of any substance by chemical or electrochemical reaction with its environment.the term corrosion specifically applies to the gradual action of natural agents, such as air or salt water, on metals.. if metal can corrode around salt water does it make sense to use aluminum boats in a salt water environment?.
Aluminum boats differing metals in contact with one another. structurally the brass base of an aerial fitted to the deck of an aluminum boat gets covered in spray and this saltwater solution is enough to start galvanic corrosion. the brass is the more resistant metal and metal in contact with the base starts to be eaten away.. Prior to that, riveting was the standard technique for joining aluminum sheets on boat hulls—a technique still used for many smaller boats that use thinner-gauge aluminum. the image of a leaky, riveted runabout with ungainly lines persists for some people when picturing an aluminum boat.. Fiberglass is generally quieter (and heavier) than aluminum, and it is impervious to salt water. fiberglass hulls from the 1970’s are still on the water today's aluminum boats in .125 g aluminum (super johns) are of an all welded construction and have little to no corrosion issues..
