upper and lower sails was a matter of practicality, since undivided sails were larger and, consequently, more difficult to handle. Larger sails necessitated hiring, and paying, a larger crew. Additionally, the great size of some late-19th and 20th century vessels meant that their correspondingly large sails would have been impossible to handle had they not been divided.

Jibs are carried forward of the foremast, are tacked down on the bowsprit or jib-boom and have varying naming