Selecting the system The objective is to match the steering system to the requirements of the vessel. This depends on four things; 1. hull type (ie: planing or displacement), 2. type of propulsion system in the vessel (ie: inboard, outboard, sterndrive, etc.), 3. the number of engines or rudders, and 4. the total power of the engines (ie: Horsepower). Once the system and cylinder has been selected, the size of the helm pump must be determined. SeaStar systems also allow the following options to be specified; 1. the number of steering stations,
2. helm configuration (ie: standard or tilt helm), 3. additional features such as autopilots, and 4. power assist.
WARNING! Recommendations made in this selection guide are based on our experience with typical installations, applications and usage. Do not use products in applications that they were not intended for. It is the boat manufacturer and the installer’s responsibility to ensure the components selected are sufficiently validated on the boat application for safe and acceptable operation. Less wheel turns lock to lock results in more steering effort. Conversely, more wheel turns lock to lock results in less steering effort. However, additional factors that can influence steering effort are; 1. vessel speed, 2. rudder size, 3. unusual propeller selections, 4. hull type (ie: displacement, planing, etc.), 5. improperly aligned counter balance skeg, torque tab 6. trim/position, and 7. propeller height relative to water. NOTE: Steering response versus steering effort Steering wheel effort is directly proportional to the number of wheel turns lock to lock. The number of wheel turns lock to lock is dependent on three things; 1. the volume of the cylinder, 2. the displacement of the helm pump, 3. the allowable movement of the rudder or drive unit.
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