In rowing there are four primary types of shells used: the sculling outrigger, the pair-oared outrigger, the four-oared outrigger, and the eight-oared outrigger. An outrigger is a set of rowlocks ...

but most people have never sat down in a racing shell. Roger Huffman, Milwaukee Rowing Club director and head girls coach, explains that there are two types of rowing: sweeping and sculling.