What is a name for a small rowing boat?

Answer 1

Well, if you're talking sweeping, then a pair is as small as it gets (2 people, one oar each). To get bigger, there are fours (four people, one oar each) and eights (eight people, one oar each)

But it you're sculling, then you can have a single (one person, two oars), a double (two people, two oars each), or a quad (four people, two oars each).

Answer 2

If you're thinking about rowing, the sport, then it is single scull, a one man crew.