Fuente: WIPO "rice" A small boat, preferably of a type known as a drift boat, is equipped, in the vicinity of the center of mass of the boat and its fixed contents, with a motor-driven pump having a casing and an impeller which drives water upward in the casing. The casing is formed to admit water to the bottom of the pump chamber and discharge it from the top of the pump chamber. The intake and discharge passages terminate at a common level, however, for selective communication with stationary intake and discharge conduits which radiate from the pump perimeter and terminate at their outer ends below water level. The pump casing is rotatable for selectively placing different diametrically opposite fixed conduits selectively in communication with the intake and discharge passages of the pump, respectively. According to the orientation of the pump casing, any fixed conduit may be caused to serve as an intake conduit with a diametricallly opposite fixed conduit serving as a discharge conduit.