Skip Chain?

What is a skip chain on a chainsaw and what kind of saw would you use it for?

 

There are 3 different types of chainsaw chains based on the arrangement of the teeth. A "Full Compliment" chain has a left cutter, drive link, right cutter, drive link arrangement and is used for most applications. A "Skip" chain has a left cutter, drive link, drive link, right cutter arrangement. It has 1/3 fewer cutting teeth and is generally used on long bars (24"+) for added chip clearance or when a bar for a given power head is longer than you would typically use. Fewer teeth require less power to operate. The last type is a “Semi-Skip” chain and is a mixture of the previous 2 arrangements.