What is meant by storm jib?

Answer 1

A small, heavy, high-cut jibsail that may or may not bind to the headstay. The idea of a storm jib is based on the tradeoff between wanting to loose sail area in really heavy weather, and not wanting to lose complete control of the boat as you would running under bare poles. The weight is obvious; to avoid blowing out. The size too -- to maintain only the barest surface area required to enhance control. It's high cut so as to not be taken out of you take a wave over the bow.