ClipArt ETC
Famous Stalemate between the Monitor and Merrimac.

Moniter and Merrimac

Famous Stalemate between the Monitor and Merrimac.

Battle between the ironclads Monitor and Merrimac.

Monitor and Merrimac

Battle between the ironclads Monitor and Merrimac.

Robert Livingston Stevens applied the wave line, concave waterlines on a steamboat hull, in 1808.

Stevens's Ironclad Floating Battery

Robert Livingston Stevens applied the wave line, concave waterlines on a steamboat hull, in 1808.

Naval battle between the Union Weehawken and Confederate Atlanta.

Action between the Weehawken and Confederate Iron-clad Atlanta

Naval battle between the Union Weehawken and Confederate Atlanta.