Sculling - Rowing With An Oar in Each Hand
In sculling, each rower has two oars (one in each hand), and because of this symmetry the rowers are not referred to as "port" or "starboard."
One person alone can row a single sculling boat.
There are sculling boats built for more than one person. These can be referred to as double (two rowers), quad (four rowers), etc.
Because of the flexibility and symmetry of sculling, The Chicago Training Center teaches new rowers to scull and focuses on sculling practice and competition.