“Jet Ski” refers to a personal watercraft (PWC) brand manufactured by Kawasaki Heavy Industries, Ltd. The first commercially successful Jet Ski model, the Kawasaki Jet Ski 400, was introduced in 1973. This marked the beginning of the Jet Ski brand and the popularization of personal watercraft for recreational use.

The invention and development of personal watercraft, including the Jet Ski, can be traced back to various innovations and prototypes from the 1960s and early 1970s. However, Kawasaki’s introduction of the Jet Ski in 1973 was a significant milestone in the history of PWCs, launching a new era of water-based recreation and adventure.

Since then, Jet Skis and similar PWCs have evolved significantly in design, technology, and performance, becoming popular worldwide for various water sports, leisure activities, and professional racing events.