ISO 25197:2012 pdf free download – Small craft一Electrical/electronic control systems for steering, shift and throttle.
— hold on to prevent falling, boat may move suddenly;
— read owner’s manual for safe use of the system.
7.4 For a wireless device, the signal strength shall be displayed at the portable control or an audible warning signal shall alert the operator that the signal is weak and he/she is about to lose control.
7.5 A wireless device shall only be able to control the boat of origin.
7.6 A wireless portable helm control shall have an indication of its electrical-charge status. The device shall prevent activation when the charge is insufficient to maintain a connection for 15 minutes without loss of the wireless communication link.
7.7 A wireless portable helm control shall notify the operator when the device is 15 minutes from deactivation due to insufficient charge.
7.8 A wireless portable helm control shall meet the requirements of applicable radio and telecommunications legislation.
8 Dynamic-positioning system (DPS)
8.1 It shall only be possible to activate DPS systems manually.
8.2 DPS systems shall have a display at the craft main helm station for the visual DPS precision value.
8.3 The following warnings shall be conveyed to the operator upon activation of the DPS through the use of applicable ISO graphical symbols or the following text:
— boat is considered under way;
— keep proper lookout;
— stay out of water, propellers are spinning;
— hold on to prevent falling, boat may move suddenly;
— read owner’s manual for safe use of the system.
8.4 Activation shall only be possible if the DPS precision value is within the manufacturer-set limits.
8.5 If the dynamic-positioning (autonomous) mode is activated and the DPS precision value is out of the manufacturer-set limits at any time, the control system shall alert the operator visually and audibly of disengagement of the DPS.
8.6 Maximum allowable envelope/radius and heading deviation shall be manufacturer-set, not adjustable by the operator.
8.7 Maximum engine speed for dynamic positioning shall be manufacturer-set, not adjustable by the operator.
8.8 Helm stations not equipped with a display screen shall be labelled with the same warnings as in 8.3.
9.1 Loss of operation
9.1.1 In the event of a command station malfunction in a multiple helm station system, the system shall:
— not prevent transfer to, or operation from, other helm stations; and
— alert the operator visually and/or audibly that the failed command station is not working.
9.1.2 In the event of loss of steering control affecting only one engine in a multi-engine installation, the system shall still be capable of steering the boat.
9.1.3 In the event of a command station failure, the operator shall be notified and the affected command station shall switch to a fail-safe mode.
NOTE System performance might be at a reduced level.
9.1.4 In the event of loss of steering control in a single-engine rudder or strut installation, emergency control
of the rudder shall be possible.
9.2 Loss of computer command logic
The system shall notify the operator of a command logic loss or a malfunction in its computer command logic.
10 Test requirements
10.1 General test requirements
At least three consecutively manufactured samples of each electronic and electromechanical component, as sold, shall be environmentally and mechanically tested to verify compliance with this International Standard. For EMC tests, only one sample need be tested.
Electronic and electromechanical components that have been tested and have passed with fewer than three consecutive samples and that have been in production for a minimum of five years prior to the release of this International Standard shall be considered compliant.