Which vessels fought in the first battle of ironclads during the American Civil War?

the correct answer should say the Monitor and the Merrimack. the rebuilt and renamed ship was not part of the battle.

I agree. The correct answer should say "The Monitor" and "The Merrimack."

Donna, Confederate States Ship.

Clidge, it was a stalemate with both ships withdrawing.

For those of us that didn’t major in United States history it would have been nice if the answer had said who won

What does CSS mean?