The Confederates had a ship called an Ironclad (one of the inventions of the Civil War) and this Ironclad ship was called the Merrimac. If you don't trust this answer then don't blame me, because that's what we learned in school.
USS Merrimac became the CSS Virginia.
warship i guess
Navy of the Confederate States
CSS Alabama
The CSS Alabama was a warship built in Great Britain. It was built secretly, expressly for the use of the Confederacy during the Civil War.
The USS Monitor was a US warship. The CSS Virginia was a Confederate warship. While it was considered a draw, the Virginia did not see action again.
The Union warship USS Monitor defeated the Confederate warship USS Merrimack in the Battle of Hampton Roads. This is also known as the Battle of the Ironclads.
The Confederate submarine H L Hunley sank a Federal warship, Housatonic
It is called Satanism
Longships
trireme
A Trireme