ISO 22090-3:2014 pdf free

ISO 22090-3:2014 pdf free.Ships and marine technology一Transmitting heading devices (THDs)
This part of ISO 22090 specifies general requirements, construction, performance, and testing of transmitting heading device using GNSS principle as required by chapter V, SOLAS 1974 (as amended).
A transmitting heading device (THD) is an electric device that provides information about the ship’s true heading.
In addition to the general requirements contained in IM0 Resolution A.694(17) to which IEC 60945 is associated and the relevant standard for the sensing part used, the THD equipment shall comply with the following minimum requirements.
Where the IMO prfrmance standards that apply to the sensing part do not speifyageographical operating area, the THD shall operate
a) at a maximum rate of turn 20%/s and
b) from 70° latitude south to 70° latitude north as minimum.
The THDs complying with the requirements contained in this part of ISO 22090 can be used for heading information as contained in chapter V of the SOLAS Convention.
In addition, such THDs should meet the dynamic requirements contained in the HSC Code, chapter 13 for the carriage of a suitable device providing heading information.
NOTE 1 Several technologies can be used to detect and transmit heading information. It is ilgical to standardize the detection of the heading separately from the transmission of the heading. Therefore, separate parts of this part of ISO 22090 refer to different technologies. The requirements of this part of ISO 22090 only apply to the principle of the GNSS. Other technologies are covered in other parts of ISO 22090.
NOTE 2 All requirements that are extracted from the recommendation of IMO Resolution MSC. 116(73) on performance standards for transmitting heading devices are printed in italics.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 25862, Ships and marine technology一Marine magnetic compasses, binnacles and azimuth reading devices
IEC 60945, Marine navigation and radiocommunication equipment and systems一General requirements一Methods of testing and required test results.ISO 22090-3 pdf download.