BS ISO 21195:2020 pdf download.Ships and marine technology一Systems for the detection of persons while going overboard from ships (man overboard detection).
5.5.3 NoIse emitting system components
All parts of the system that is installed in the navigating bridge and/or chartrooms shall have a combined noise level of less than 6OdB(A) at a distance of 1 m from any part of the equipment under test (EUT), as defined in IEC 60945:2002, 11.1. The MOB audible alarm is exempt from this requirement.
System components installed in locations other than the navigating bridge or chartroom shall follow the maximum noise levels set forth by IMO Resolution MSC.337(91) The MOB audible alarm is exempt from this requirement.
5.5.4 Power
The equipment shall be compatible with ship’s power as specified and tested in accordance with
IEC 60945 for nominal AC power input between 100 Vrms and 230 Vrms.
5.5.5 Electromagnetic compatibility
The system shall satisfy the requirements for electromagnetic emission and immunity to electromagnetic environments set forth in IEC 60945.
5.5.6 Ingress protection
All components of the system that are required to be Installed in an area of the ship that is open to the elements shall be certified to an ingress protection rating of lPx6 or greater. Testing shall be conducted in line with procedures in IEC 60945.
5.5.7 Environmental vibration
The system shall be capable of withstanding typical environmental vibrations that can be encountered on the ship. The system shall be tested in accordance with IEC 60945 to determine this capability.
5.5.8 Thermal performance
The system shall be certified as having been tested against the thermal requirements of IEC 60945 as applicable to each component.
5.6 MOB detection
The system shall detect persons that pass through the MOB detection zone (see 51) while going overboard.
The method of detection shall not require the passengers or crew to wear or carry a device to trigger an MOB event.
At a minimum, the system shall be capable of detecting a human with a height greater than 1,466 m. This height is based on the minimum 5th percentile stature data published in ISO/TR 7250-2.BS ISO 21195 pdf download.