ISO DIS 8848:2019 pdf download – Small craft — Remote steering systems.
3.4 control station console and its operating and/or controlling components, the location in the craft from which active steering, shift and throttle control may be achieved 3.5 drag link (link rod or link arm) device in a engine-mounted steering system by which the linear force of the output ram is transmitted to the engine steering arm 3.6 handlebar mechanical means for applying manual steering effort to the helm in a horizontal configuration with hand grips at each end and the helm connected at the middle 3.7 helm mechanism, exclusive of a steering wheel or other means for manual application of controlling force, by which controlling force is fed into a steering system cable or other force-transmission means 3.8 joystick operator input device for the simultaneous control of thrust, steering and propulsion 3.9 mini jet craft craft weighing less than 1 000 kg with an inboard engine powering a water-jet pump as its primary propulsion, designed to be operated with one or more persons within the confines of a hull 3.10 minimum retained system performance system capability after test(s) such that at least 90 % of the steering arc normally available each side of the mid-position may be obtained by exertion of no more than 27 N∙m of torque at the helm, through the steering wheel or other normal control Note 1 to entry: This criteria does not define steering system performance while a craft is underway but is intended to provide quantitative limits for design and test purposes. 3.11 engine-mounted steering system assembly including all components necessary to transmit remote manual effort to the end of the output ram which is affixed to an engine mounted steering tube and a drag-link supplied by the engine manufacturer 3.12 multiple engine installation multiple engines, normally used simultaneously for a craft’s main propulsion, controlled by a common steering system 3.13 steering system assembly including all components necessary to transmit remote manual effort to the rudder, outboard engine, inboard, sterndrive or water-jet drive 3.14 two-cable steering system two independent cables attached at the interface point(s) of the ram(s) and at the helm and driven by a common steering shaft; a system generally used to minimize steering backlash or lost motion
3.15 steering wheel mechanical means for applying manual steering effort to the helm, normally a circular configuration with a continuous loop at the distal end of support spokes with the helm connected at the rotational axis 3.16 steering wheel diameter the diameter of the circle formed by the outermost sections of the steering wheel, see Figure 6 3.17 steering wheel dish the distance between the two parallel planes formed by the aft rim surface and the forward hub surface of a steering wheel, see Figure 6 3.18 downflooding? height smallest height above the waterline to any downflooding opening, apart from those excluded in ISO 12217 when the craft is upright in calm water and in the maximum load condition, measured to the critical downflooding point which might be within pipes or ducts inside the hull Note 1 to entry: Downflooding height is expressed in metres.
ISO DIS 8848:2019 pdf download – Small craft — Remote steering systems
