A boat having a jump seat is provided. The boat includes a boat hull having a recessed passenger compartment. The jump seat includes a support assembly comprising a support deck and a sleeve. A seat cushion is provided for selectively resting on a portion of the deck assembly and being stowed within the pocket. The deck assembly can be used both as a seat support and as a standing deck eliminating the need to stand on a cushion to thereby provide a more stable convertible standing area.