The description of the world utilizes the names of a few different types of ships, as well as a couple naval terms.
Clinker-built: Clinker-built ships use overlapping planks to form their hull. Viking longships are a well-known example of this.
Carvel-built: Carvel-built ships use end-to-end planks to form their hull. Most ship types people are familiar with use this method.
Cog: A simple vessel with a single mast, often used for trading purposes.
Carrack: A military vessel, with an exaggerated forecastle and aft deck designed to impart superior positions during boarding actions.
Caravel: A small, fast ship for exploration and scouting.