Complex sentence: A sloop's fore-triangle is smaller than a cutter's, and unlike a cutter, a sloop usually bends only one headsail, though this distinction is not definitive; some sloops such as the Friendship Sloop have more than one.
Split into simpler sentences: A sloop's fore-triangle is smaller than a cutter's, and a sloop usually bends only one headsail, though this distinction is not definitive. Unlike cutters, sloops usually have only one headsail, though some sloops such as the Friendship Sloop have more than one.