Divers Install An Anode (IMAGE) TechLink Caption US Navy construction divers weld zinc anodes onto underwater piers at Naval Base Guam in 2017. The Navy has invented a new anode alloy that is zinc-free and cost-effective. Credit Arthurgwain L. Marquez/Navy Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.