Quoting Maxime MaxSamAlex
Very nice! The streamlined sides are a nice touch, and aren't necessarily too smooth. Have you ever considered making real life ships? It gives a general idea on the design, even with small changes to details.
When it comes to building old sailing ships, i usually prefer to make them up myself since you can just build whatever you want although i have made quite a few ships based on historic ones such as my HMS Warrior, the golden hind, and the HMS Majestic (which is roughly based on a ship of the line). I am also currently building a french frigate which is based on a historic frigate. I should upload it in a few weeks.