Hovercraft without lift fan

A hovercraft without lift fan, comprising:

• a hull;
• and
• a power device;
• wherein said hull comprises:
• a main body;
• and
• two sub-bodies, wherein bottom surfaces of said sub-bodies are lower than a bottom surface of said main body,
• wherein said two sub-bodies are symmetrically aligned under a front portion of said bottom surface of said main body, said two sub-bodies are provided with a distance therebetween;
• an outer surface of said sub-body and an outer surface of said main body form an aligned side surface or an unified side surface;
• said aligned side surface or said unified side surface extends towards a space under said bottom surfaces of said main body and said sub-bodies for forming a main sidewall;
• an inner side surface of said sub-body extends towards a space under said bottom surface of said sub-body for forming a sub-sidewall;
• wherein during sailing, said main sidewalls and said sub-sidewalls are partly immersed in water and respectively form three independent lifting areas having forward openings with said bottom surface of said main body and said bottom surfaces of said sub-bodies;
• wherein said bottom surface of said main body and said bottom surfaces of said sub-bodies are flat and are parallel to each other;
• wherein said main sidewalls are longitudinally continuous flat plates parallel to each other;
• said sub-sidewalls are also longitudinally continuous flat plates parallel to each other;
• said sidewalls are parallel to said sub-sidewalls.