 The most common modern sailboat is the sloop, which features one mast and two sails, typically a Bermuda rigged main, and a headsail.This simple configuration is very efficient for sailing into the wind.A fractional rigged sloop has its forestay attached at a point below the top of the mast, allowing the mainsail to be flattened to improve performance by raking the upper part of the mast aft by tensioning the backstay.