Hydraulic steering systems are installed on boats where the rudder pressure is too high for a mechanical system or where, for convenience, the boat can be helmed from more than one steering position. Steering force transmission through a system of hydraulic pumps and cylinders is always indirect. The wheel takes considerably more turns to go from lock to lock than with a mechanical system, and this is one reason why servo-pendulum gears are not really practical on boats with hydraulic steering. The second reason is that there is a degree of slippage in most hydraulic systems, caused by oil leaking out around bad seals (for example around packing rings). A servo-pendulum gear requires the rudder amidships position of the wheel always to be the same, which is seldom the case with hydraulic steering.
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Lets start by identifying what exactly certain boats are. Sometimes the terminology can get lost on beginners, so well look at some of the most common boats and what theyre called. These boats are exactly what the name implies. They are meant to be used for fishing. Most fishing boats are powered by outboard motors, and many also have a trolling motor mounted on the bow. Bass boats can be made of aluminium or fibreglass.