BS EN ISO 8847:2021 pdf download.Small craft一Steering gear一 Cable over pulley systems.
This document specifies the requirements for the design, installation and testing of cable over pulley steering systems on small craft with or without a propulsion engine(s), and on small craft with outboard engine(s) up to and including 37 kW total power.
It specifies the requirements for the design and testing of all components of a cable over pulley steering system, from the steering mechanism to the mechanical interface with the rudder shaft or the outboard engine. It applies to cable over pulley steering systems, whether for pedestal or bulkhead types.
This document does not address emergency means of steering the craft.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2408:2017. Steel wire ropes — Requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https.J/www.iso.orgJobp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 accessible
capable of being reached for operation, inspection or maintenance without removal of permanent structure of the craft
3.2 cable
flexible mechanical means of transmitting tension forces from one location to another
Note I to entry: This cable can be metallic or non•metallic.
3.3 cable drum
circular feature of the steerinq mechanism (1111) over which the steering cable (12) is routed to provide the required cable travel
3.4 cable over pulley steering system
steering system in which rotation of the steering wheel transmits movement to either the steering arm quadrant fastened to the rudder shaft, or to the outboard engine steering arm, by mechanical means including flexible cable over pulleys mounted to the structure of the craft.BS EN ISO 8847 pdf download.