Question 1303 Deck Safety

The correct answer is A) Hard rubber. Hard rubber is an acceptable insulator to prevent galvanic corrosion between an aluminum boat and the davits and gripes. Galvanic corrosion can occur when two dissimilar metals are in contact, creating an electrochemical reaction that corrodes the more active metal (in this case, the aluminum). Using hard rubber as an insulator between the aluminum and the davits/gripes interrupts this galvanic connection and prevents the corrosion. The other options (B-D) are not suitable insulators for this purpose, as materials like canvas, leather, and sponge rubber do not provide adequate insulation to stop the galvanic reaction between the aluminum and the other metal components.