What kind of boats for transport were used in the 13th century?

Boats in 1212 that would sail mass trasport across the Mediteranean. Where all the crew sleep and what kind of constant work would be done, what kind of sails. How would the fare during a major storm|||A cog (or cog-built vessels) is a type of ship that first appeared in the 10th century, and was widely used from around the 12th century on. Cogs were generally built of oak, which was an abundant timber in the Baltic region of Prussia. This vessel was fitted with a single mast and a square-rigged single sail. Even though this type of rigging prohibited sailing into the wind, it could be handled by a smaller crew, which reduced operational costs. These vessels were mostly associated with seagoing trade in medieval Europe, particularly in the Baltic Sea region.