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BS ISO 22090-2:2014

BS ISO 22090-2:2014

$102.76

Ships and marine technology. Transmitting heading devices (THDs) – Geomagnetic principles

Published By Publication Date Number of Pages
BSI 2014 20
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This part of ISO 22090 specifies the construction, performance, and testing of a device employing only magnetic means as transmitting heading devices required by chapter V, SOLAS 1974 (as amended).

A Transmitting Heading Device (THD) is an electronic device that provides information about the shipā€™s true heading.

In addition to the general requirements contained in IMO 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 performance standards which apply to the sensing part do not specify a geographical operating area the THD shall operate

  1. at a minimum rate of turn 20 Ā°/s and

  2. from 70Ā° latitude south to 70Ā° latitude north as a 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 are intended to 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 illogical 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 geomagnetic. 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.

A standard magnetic compass with a pickup sensor could be applied as a sensing part of this standard of geomagnetic principle. However the IMO performance resolution MSC.116(73) requires that the THD is intended to be met for the dynamic requirements of the HSC code. Nevertheless, when the THD would be only used other than the HSC, the limit of rate of turn may be 6 Ā°/s instead of 20 Ā°/s.

PDF Catalog

PDF Pages PDF Title
6 Foreword
7 Section sec_1
Section sec_2
1 Scope
2 Normative references
8 Section sec_3
Section sec_3.1
Section sec_3.2
Section sec_3.3
Section sec_3.4
Section sec_3.5
3 Terms and definitions
9 Section sec_3.6
Section sec_3.7
Section sec_3.8
Section sec_3.9
Section sec_3.10
Section sec_3.11
Section sec_3.12
Section sec_4
Section sec_4.1
Section sec_4.2
Section sec_4.2.1
Section sec_4.2.2
4 Performance requirements
4.1 Functionality
4.2 Information
10 Section sec_4.3
Section sec_4.4
Section sec_4.5
Section sec_4.6
Section sec_4.7
Section sec_4.8
Section sec_4.8.1
Section sec_4.8.2
4.3 Fore-and-aft mark
4.4 Heading information
4.5 Electrical wiring
4.6 Non-magnetic housing
4.7 Alert signal
4.8 Interface
11 Section sec_5
Section sec_5.1
Section sec_5.2
Section sec_5.3
Section sec_5.4
Section sec_5.5
Section sec_5.6
Section sec_5.7
Section sec_5.8
Section sec_5.8.1
5 Accuracy
5.1 General
5.2 Accuracy of transmission data
5.3 Static error (settle point error)
5.4 Dynamic error
5.5 Follow-up error
5.6 Settling time requirements to the directional system
5.7 Correcting the magnetic heading by magnetic variations
5.8 Adjusting of magnetic deviations and heeling error
12 Section sec_5.8.2
Section sec_5.9
Section sec_5.10
Section sec_6
Section sec_6.1
Section sec_6.2
5.9 Means of adjusting the deviation by vertical soft iron of the ship
5.10 Protection of correcting devices
6 Type tests
6.1 General
6.2 Transmission error test
13 Section sec_6.3
Section sec_6.4
Section sec_6.4.1
Section sec_6.4.2
Section sec_6.5
Section sec_6.6
Section sec_6.7
6.3 Fore-and-aft mark test
6.4 Static error test
6.5 Follow-up error test
6.6 Settling time test
6.7 Tests for correcting the magnetic heading by magnetic variations
14 Section sec_6.8
Section sec_6.9
Section sec_6.10
Section sec_6.11
Section sec_6.12
Section sec_7
6.8 Tests for adjusting magnetic deviations
6.9 Tests for the means of adjusting the deviation by vertical soft iron
6.10 Dynamic accuracy
6.11 Interface test
6.12 Malfunction test
7 Marking and identification
16 Annex sec_A
Table tab_A.1
AnnexĀ A
(informative)

Equivalent requirements in ISOĀ 22090-2 and IMOĀ ResolutionĀ MSC.116(73)

17 Reference ref_1
Reference ref_2
Reference ref_3
Reference ref_4
Reference ref_5
Reference ref_6
Reference ref_7
Bibliography

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BS ISO 22090-2:2014
$102.76