A sampan is a relatively flat-bottomed Chinese and Malay wooden boat. Some sampans include a small shelter on board and may be used as a permanent habitation on inland waters. Sampans are generally used for transportation in coastal areas or rivers and are often used as traditional fishing boats. It is unusual for a sampan to sail far from land, as they do not have the means to survive rough weather. Sampans may be propelled by poles, oars (particularly a single, long sculling oar called a yuloh) or may be fitted with outboard motors.