The forestay is a wire that secures the mast to the front of the boat. With a fractional rig, rather than being attached to the top of the mast, the forestay is attached between about 1/8 to 1/4 of the length of the mast lower down. The foresail (jib or genoa) is then rigged to this stay. The mast is farther forward on the boat than on a masthead rig and so it has a larger mainsail. Masthead rigs are most common on larger keelboats or cruisers. A fractional rig is typically used on sailing dinghies and racing oriented keelboats, such as the J/24.