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=== Sailboat ===
Smaller sailboats use a simple steering system with a tiller attached to the stern post. If you move the tiller to the left, the boat turns right; move the tiller right, and the boat goes left. A tiller is a horizontal arm that evolved from a [https://en.wikipedia.org/wiki/Steering_oar steering oar].
Sailboats longer than 30 feet (9 meters) generally use a steering wheel. A mechanical linkage from the wheel controls the position of the rudder. Turn the wheel left and the boat goes to the left — turn right and the boat goes to the right.
Usually the linkage is a cable affair. On a larger sailboat the wheel also will be larger to provide greater [https://en.wikipedia.org/wiki/Mechanical_advantage mechanical advantage ] to the helmsman.
Possible failure points are:
* control cables
* quadrant arm on the stern post or rudder shaft
=== Powered Boat ===
[[File:CarLightsDigital.png|thumb|left|250px|Modern digital system for car lights]]
With a digital system, a controller is located in the rear area with power leads going to the lights. A single power/control lead is run from the front of the car to the rear. This is cheaper because digital components are cheap, copper wire is expensive, making wiring looms is expensive, and installing looms is expensive, relatively speaking.
The disadvantage is that when a digital unit fails, you can't repair it on the spot: you have to replace it. If it's advisable to keep a spare, then your inventory costs have increased.
Possible failure points are:
== Emergency Steering ==
Steering is a vital single-point of failure, so a duplicate, backup or [[:Category:EmergencySteeringSystems|emergency steering system ]] is advised. [[Category:SteeringSystemsGeneral]]