Pontoon boat having inner pontoon with stadium shape

A pontoon boat which extends from a front to a back along a longitudinal axis, from a port side to a starboard side along a lateral axis which is perpendicular to the longitudinal axis, and from a top to a bottom along a vertical axis which is perpendicular to the longitudinal axis and perpendicular to the lateral axis, the pontoon boat comprising:

• a port pontoon, a starboard pontoon, and an inner pontoon located laterally between the port pontoon and the starboard pontoon, wherein each of the port pontoon, the starboard pontoon and the inner pontoon comprises a cylindrical body portion which longitudinally extends between a forward end and a rearward end,
• the inner pontoon further having a rear end portion which longitudinally extends from a frontmost end to a rearmost end, the rear end portion having a length in the longitudinal direction, a width in the lateral direction, and a height in the vertical direction, wherein as viewed in a plane defined by the lateral and vertical axes, the rear end portion gradually transitions along the length from a circular shape to a stadium shape so as to deflect water aa from the inner pontoon, and wherein the height of the rear end portion remains constant along an entirety of the length so as to reduce drag and/or provide laminar flow of the water therepast.