a steering wheel 28 serving as the boat 39 s steering mechanism a pressure source 30 and a steering cylinder assembly 32 the present embodiment contains no mechanical linkage connecting the helm 26 to the steering cylinder assembly 32 both assemblies 26 and 32 are pressurized by a single power source the helm 26 is mounted through the dash 22 and is actuated by the steering wheel 28 the steering cylinder assembly 32 is actuated by the helm 26 to move the tiller arm 24 and pivot the motor 20 on its mount under power supplied by the pressure source 30 in order to minimize the size and weight of the components that are mounted behind the dash 22 the steering cylinder assembly 32 is located remote from the helm 26 possibly adjacent the motor 20 as illustrated or on the motor so as to be connectable directly to the tiller arm 24 alternatively the steering cylinder assembly 32 could be mounted at some other location on the boat 12 and connected to the tiller arm 24 by a push pull cable or the like multiple steering cylinders could be provided in a multiple engine watercraft and connected to the helm 26 in a parallel fashion the helm 26 is connected to the pressure source 30 by a high pressure line 34 and a return line 36 it is also connected to the steering cylinder assembly 32 by the high pressure line 34 and a.