I am a warship known for my unique, unconventional design and heavily armored gun turrets. I served in multiple navies and am recognized for my distinctive silhouette. My service was relatively short, but I made a lasting impression in naval history. What am I?

1. I was a pre-dreadnought battleship known for my low freeboard.
2. My design was influenced by coastal defense requirements.
3. I featured a unique arrangement of my main battery guns in turrets.
4. My armament included four large-caliber guns, each in its own barbette