Corroded plaque shows tallship, ironclad, early warship, aircraft carrier and jets.

I’ve wondered for a long time about this mysterious plaque on San Diego’s Embarcadero. It’s located on the Greatest Generation Walk, right next to the USS Midway Museum, and stands back-to-back with a Pearl Harbor Survivors Plaque which I blogged about here.

Thousands of people walk by this old, corroded plaque every day, but I can find absolutely nothing on the internet about its origin.

An image framed by rope includes several vessels, including a tall ship (perhaps the USS Constitution), an ironclad (perhaps the USS Monitor), an old warship with a side-mounted gun, an aircraft carrier, and some jets flying overhead. Words indicate the plaque commemorates the United States Navy’s 200 years of Building on a Proud Tradition. The United States Navy began in 1775 and celebrated its bicentennial in 1975.

Obviously, whoever placed the plaque at…