Abstract: A watercraft kit includes a watercraft and a buoyant removable rear extension optionally connected to a rear of the watercraft. The watercraft includes a hull having a transom and a deck disposed above the hull. The deck is supported by the hull. A propulsion system is operatively connected to an engine for expelling a stream of water rearward of the transom to propel the watercraft. When the removable extension is connected to the rear of the watercraft, the removable rear extension is disposed at least in part rearwardly of the transom. The removable rear extension defines a longitudinal channel. When the removable extension is connected to the rear of the watercraft, the channel receives at least one of at least a portion of the propulsion system, and at least a portion of the stream of water flowing therethrough when the propulsion system is operating to propel the watercraft forwardly.

Abstract: A personal watercraft has a hull and a deck. The deck includes a pedestal, two gunnels, two footrests, and a rear platform. A straddle-type seat is disposed on the pedestal. A steering assembly is disposed at least in part forwardly of the seat. An engine is supported by the hull. A propulsion system is connected to the hull and is operatively connected to the engine. A ballast tank is disposed at least in part on the rear platform. The ballast tank includes a rigid ballast tank body, and at least two apertures in the ballast tank body. A connector releasably connects the ballast tank to one of the hull and the deck. A pump fluidly communicates with one of the at least two apertures in the ballast tank body. A ballast tank having a generally L-shaped rigid ballast tank body is also disclosed.

Abstract: A personal watercraft has a hull and a deck. The deck includes a pedestal, two gunnels, two footrests, and a rear platform. A straddle-type seat is disposed on the pedestal. A steering assembly is disposed at least in part forwardly of the seat. An engine is supported by the hull. A propulsion system is connected to the hull and is operatively connected to the engine. A ballast tank is disposed at least in part on the rear platform. The ballast tank includes a rigid ballast tank body, and at least two apertures in the ballast tank body. A connector releasably connects the ballast tank to one of the hull and the deck. A pump fluidly communicates with one of the at least two apertures in the ballast tank body. A ballast tank having a generally L-shaped rigid ballast tank body is also disclosed.