Storm jibs:

Storm jibs, as shown in most sail plans, are altogether too small, and are of no use whatever. When a sail of that size would be any good it would be blowing too hard to use any canvas forward of the mast. A storm jib wants to be big enough to give the boat some life. To do this it must have a pull to it. They should be roped heavily, and have good strong clew pieces and irons. The only way to set them is flying.