Additional categories of sea shanties might include:

1. Pumping Shanties-longer songs much like capstan shanties

2. Loading and Unloading Cargo Shanties- "Fire Maringo", "Roll The Woodpile Down", and "Roll The Cotton Down."

Probably your best available reference book would be Stan Hugell's Shanties of the Seven Seas which can be purchased from the museum store at Mystic SeaPort.

Cheerily,
Charley Noble