ISO 21195:2020 pdf download.Ships and marine technology — Systems for the detection of persons while going overboard from ships (man overboard detection)
1 Scope
This document specifies technical requirements for systems designed to detect a person who has gone overboard from a ship.
This document does not cover man overboard (MOB) detection systems that require the passengers or crew to wear or carry a device to trigger an MOB event.
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.
IEC 60945:2002, Maritime navigation and radiocommunication equipment and systems — General requirements — Methods of testing and required test results
IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems — Digital interfaces
IMO Resolution A., 1021(26), Code on alerts and indicators, 2009
IMO Resolution MSC., 302(87), Bridge alert management
IMO Resolution MSC, 337(91), Adoption Of The Code On Noise Levels On Board Ships
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:// www. iso. org/ obp
— IEC Electropedia: available at https:// www .electropedia. org/
3.1 accessible open area
area of the ship accessible to either passengers or crew and open to the outside, where a person who fell would end up overboard
3.2 active state
state in which the system is on
3.3 alarm action
action available within the system when a MOB alert or alarm is triggered or changes status
3.4 control station
equipment that provides the facilities for human observation and control of the MOB detection system
3.5 data
information captured and/or generated by the MOB detection system
Note 1 to entry: Data can be in either a raw or a processed form and includes basic (e.g. text, numeric, Boolean),composite (e.g. array, class, and list) and multimedia (e.g. images, audio, and video) data types.
3.6 environmental vibration
periodic motion of equipment installed aboard ships as a result of environmental forces
3.7 false alarm
system activation not caused by an actual MOB event
3.8 heading
angle between the direction in which the ship’s bow is pointing and a reference direction, e.g. true north, expressed in degrees, usually from 000° clockwise through 360°
3.9 laboratory
body that performs one or more of the following activities:
— testing
— calibration
— sampling associated with subsequent testing or calibration
[SOURCE: ISO/IEC 17025:2017, 3.6, modified — Note 1 to entry has been omitted.]
3.10 man overboard event
MOB event
incident in which person(s) has accidently or intentionally gone over the side/front/back of a ship and into the water
ISO 21195:2020 pdf download
