Cog

A cog was a small, one masted sailing ship used on the Sea of Fallen Stars. Another ship, also called a cog, had two masts and was a larger version of the coaster.

Description
The smaller version of cog had only one mast and, because of its small size and limited space for provisions, it was not seaworthy enough for long ocean voyages. The larger version had two masts with square sails and cargo capacity similar to a caravel. The minimum crew size was 10 with a maximum of 25. It was 85 ft (26 m) long at the keel and 20 ft (6 m) across the beam. It usually had only one deck and could be outfitted with fore- and sterncastles. It was capable of carrying one large weapon (such as catapult or ballista) but was not built to wield a ram. The larger version was fairly seaworthy.