D&D 3.0: Tales from Mystara
A barge is not much more than a large, fiat-bottomed hull designed to haul heavy cargoes by water. Most barges are intended to be towed by other ships or by teams of draft animals on shore, but some are fitted out as royal yachts or war barges, and equipped with a set of oar sweeps for maneuvering. Barges of this sort might have large deckhouses or weapon mounts. Barges are best employed on calm, slow rivers or canals, where maneuvering is not an issue.
Barge: Colossal vehicle; Seaworthiness + 0; Shiphandling – 6; Speed oars 5 ft. (poor) or drawn; Overall AC – 3; Hull sections 80 (sink 20 sections); Section hp 50 (hardness 5); Section AC 3; Ram 6d6; Mounts 2 light and 2 heavy; Space 100 ft. by 40 ft.; Height 10 ft. (draft 10ft.); Complement 120; Watch 5 plus 40 rowers; Cargo 50 tons; Cost 6,000 gp.