A JET ski is a type of personal watercraft, also known as a PWC, which is powered by an internal combustion engine. The term 'JET ski' is derived from the word 'JET, ' referring to the propulsion system used in these vehicles. The most common type of JET ski is the MIG, which stands for 'motorized inflatable craft.' These JET skis are designed with an inflatable hull and are powered by a small engine. They are typically used for recreational activities such as racing, touring, and wakeboarding.