One of the ships at the Battle of Butte La Rose, or Fort Burton or Butte a-la Rose, or whatever it's called, was the USS Estrella, a 438 ton steamer mounting one 30-pdr rifled gun, two 32-pdr guns, and two 24-pdr howitzers.
It was perfectly-suited for chasing blockade-runners or pounding shore installations. It was built in England and reportedly captured running the blockade. The Army used it before it was transferred to the Navy in late 1862. It participated in the engagement that ended with the first CSS J. A. Cotton being destroyed January 14, 1863. She engaged the second CSS J.A Cotton at Fort Burton in April 20, 1863.
It served as the flagship of the West Gulf Blockading Squadron for the first four months of 1865.