The Geobukseon (거북선) or Turtle Ship was a famous Korean battleship used during the Imjin war against Japan in the 1590s.
Utilized by Admiral Yi Sun-Shin, the Geobukseon would go on to win numerous battles thanks to its unique armored hull and impressive speed.

I just think it’s so neat lol

Included in the PDFs are two versions- a light and dark. The one pictured is the dark version for when you have a darker main color than the contrast. There are some slight differences in the design (mainly the sails) to make it look better depending on what your color scheme is.