accordance with the principles of a preferred embodiment of the invention referring to fig1 and 5 the preferred jet propelled boat includes a hull 10 a bottom 12 a steering wheel 14 a pump unit 20 and a nozzle 27 which pivots on pivot shaft 32 according to whether steering wheel 14 is set straight ahead or to the side the pump unit 20 is attached to the stern area of the hull 10 pump unit 20 creates propulsion to drive the boat 10 by means of an engine not shown which drives the pump in known fashion by causing the pump to forcefully expel water in response to rotation of an impeller 26 at the center of the bottom of boat 12 in the left right direction of the hull 10 as shown in fig2 and 3 is the main water intake 21 which is a roughly rectangular opening following the contours of the bottom of the boat 12 this main water intake opening 21 connects to main duct 23 which initially slopes upward then stays horizontal as it extends toward the stern where it connects to nozzle 27 best shown in fig1 inside the horizontal part of the main duct 23.