Sail barges are massive vehicles that are long on luxury and short on practicality. They feature enormous sails as a throwback to the legendary days of early planetary explorers and are covered with gaudy ornamentation.
Sail barges are normally used as pleasure craft, vacation vessels, and touring vehicles, able to cross any smooth, rolling, or flat surface. They are slow—seldom traveling faster than 100 kilometers per hour, and most have to struggle to reach that speed—and have a low flight ceiling (normally less than 10 meters).
Source: REUP:412