1、May 2017 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 47.020.70!%dE“2659434www.din.deDIN I
2、SO 8728Ships and marine technology Marine gyrocompasses (ISO 8728:2014),English translation of DIN ISO 8728:2017-05Schiffe und Meerestechnik Kreiselkompasse fr die Seeschifffahrt (ISO 8728:2014),Englische bersetzung von DIN ISO 8728:2017-05Navires et technologie maritime Compas gyroscopiques usage m
3、arin (ISO 8728:2014),Traduction anglaise de DIN ISO 8728:2017-05SupersedesDIN EN ISO 8728:199901, withdrawn 201306www.beuth.deDocument comprises 19 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.04.17 A comma is used as the de
4、cimal marker. Contents PageNational foreword 31 Scope . 62 Normative references 63 Terms and definitions . 64 Construction 75 Performance requirements . 95.1 Accuracy in latitudes up to 60 . 95.2 Interface .106 Type tests 106.1 General 106.2 Settling time test .106.3 Settle point error test .106.4 S
5、ettle point heading repeatability test 106.5 Settling time on a Scorsby table 116.6 Scorsby test .116.7 Intercardinal motion test 126.8 Repeater accuracy test 126.9 Speed correction test 126.10 General requirement test 136.11 Interface test 157 Marking .158 Information .15Annex A (normative) Advice
6、to ship surveyors for installation of gyro-compasses and repeater compasses on board ships .16Annex B (informative) Equivalent requirements in ISO 8728 and IMO Resolution .17Bibliography .19DIN ISO 8728:2017-05 2National Annex NA (informative) Bibliography . 5National foreword ISO 8728:2014 has been
7、 prepared by Technical Committee ISO/TC 8 “Ships and marine technology”, Subcommittee SC 6 “Navigation” and has been adopted in this standard without any modification. The responsible German body involved in its preparation was DIN-Normenstelle Schiffs- und Meerestechnik (DIN Standards Committee Shi
8、pbuilding and Marine Technology), Working Committee NA 132-03-10 AA “Navigation”. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. In the German trans
9、lation, emphasis has been put on conveying the meaning and correcting potential conceptual ambiguities. In this process, terms of testing and approval procedures of gyro-compasses of Federal Maritime and Hydrographic Agency of Germany have been adopted. Furthermore, DIN 13312 Navigation Concepts, ab
10、breviations, letter symbols, graphical symbols as well as DIN 1319-3 Fundamentals of metrology Part 3: Evaluation of measurements of a single measurand, measurement uncertainty have been considered. From 5.1.4 onwards, when indicating the settle point error test, e.g. in “0,25 null Sekans der geogra
11、phischen Breite” for the German translation of “0,25 null secant Latitude”, a national explanation sec =1cosshall be given. In a right-angled triangle, the secant is the relation of the hypothenuse and the adjacent side and thus the reciprocal of the cosine function. Annex A is normative and Annex B
12、 is informative. In addition to the legal units of measurement, this standard also uses the unit “kn” (“knots”). It should be noted that the Gesetz ber Einheiten im Messwesen (German Law on units in metrology) prohibits the use of this unit for official and commercial purposes in Germany. The indica
13、tion of this unit solely serves to facilitate the communication with those countries where this unit is used (import-export business). Conversion: Non-SI unit SI unit Conversion kn m/s 1 kn = 0,5144 m/s The DIN Standards corresponding to the International Standards referred to in this document are a
14、s follows: IEC 60945 DIN EN 60945 ISO 61162-1 DIN ISO 61162-1 ISO 61162-2 DIN ISO 61162-2 ISO 61162-3 DIN ISO 61162-3 ISO 61162-450 DIN ISO 61162-450 ISO 61924-2 DIN ISO 61924-2 IEC 62288 DIN EN 62288 ISO 25862 DIN ISO 25862 DIN ISO 8728:2017-05 3 Amendments This standard differs from DIN EN ISO 872
15、8:1999-01 (withdrawn 2013-06) as follows: a) the new subclause 4.10 with requirements for the automatic alert (warning) or for communication with an Integrated Navigation System for warnings in case of malfunctions of the system or a power failure and that specifies the data to be communicated in ca
16、se of an alert (warning) has been included; b) requirements for changing from one source of supply to the other have been included; c) a new subclause 5.2 “Interface” with technical requirements regarding the interface for heading output and heading information to be communicated and with a required
17、 update rate (20 ms) has been included; d) the new subclause 6.11 “Interface test” has been included; e) in Annex B , the correlation of clauses and subclauses in ISO 8728 with those in IMO Resolution has been updated. f) the text has been editorially revised. Previous editions DIN ISO 8728: 1991-01
18、 DIN EN ISO 8728: 1999-01 DIN ISO 8728:2017-05 4 National Annex NA (informative) Bibliography DIN EN 60945, Maritime navigation and radiocommunication equipment and systems General requirements Methods of testing and required test results DIN EN 61162-1, Maritime navigation and radiocommunication eq
19、uipment and systems Digital interfaces Part 1: Single talker and multiple listeners DIN EN 61162-2, Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 2: Single talker and multiple listeners, high-speed transmission DIN EN 61162-3, Maritime navigation and radioc
20、ommunication equipment and systems Digital interfaces Part 3: Serial data instrument network DIN EN 61162-450, Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 450: Multiple talkers and multiple listeners Ethernet interconnection DIN EN 61924-2, Maritime navig
21、ation and radiocommunication equipment and systems Integrated navigation systems Part 2: Modular structure for INS Operational and performance requirements, methods of testing and required test results DIN EN 62288, Maritime navigation and radiocommunication equipment and systems Presentation of nav
22、igation-related information on shipborne navigational displays General requirements, methods of testing and required test results DIN ISO 25862, Ships and marine technology Marine magnetic compasses, binnacles and azimuth reading devices DIN ISO 8728:2017-05 5 Ships and marine technology Marine gyro
23、-compasses1 ScopeThis International Standard specifies the construction, performance, and type testing for gyro-compasses required by Regulation 12 of Chapter V of SOLAS 1974 (as amended).NOTE All requirements that are extracted from the recommendations of IMO Resolutions Resolution A.424(XI) on per
24、formance standards for gyro-compasses are printed in italics.2 Normative referencesThe 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 la
25、test edition of the referenced document (including any amendments) applies.ISO 25862, Ships and marine technology Marine magnetic compasses, binnacles and azimuth reading devicesIEC 60945, Maritime navigation and radiocommunication equipment and systems General requirements Methods of testing and re
26、quired test resultsIEC 61162-1, Marine navigation and radiocommunication equipment and systems Digital interfaces - Part 1: Single talker and multiple listenersIEC 61162-2, Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 2: Single talker and multiple listener
27、s, high-speed transmissionIEC 61924-2, Maritime navigation and radiocommunication equipment and systems Integrated Navigation Systems (INS) Part 2: Modular structure for INS Operational and performance requirements, methods of testing and required test resultsIMO Resolution MSC.252(83), Performance
28、standards for alert communications with an Integrated Navigation SystemIMO Resolution MSC.302(87), Performance standards for bridge alert management3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1gyro-compasscomplete equipment including all esse
29、ntial elements of the complete design, including both the gyro-compass as heading sensor and the associated heading transmission system3.2true headinghorizontal angle between the vertical plane passing through the true meridian and the vertical plane passing through the ships fore-and-aft datum line
30、; it is measured from true north (000) clockwise through 360Note 1 to entry: When the gyro-compass equipment is not installed on board ship, this “true heading” is regarded as the true heading of the lubber line. Where a gyro-compass has the facility of introducing a correction by moving the lubber
31、line, the correction is set for the local latitude.DIN ISO 8728:2017-05 6 3.3settledstable situation when any three readings taken at intervals of 30 min are within a band of 0,7, with the compass level and stationaryNote 1 to entry: The settling time is the elapsed time between the time of switch-o
32、n at the initial heading error and the third recording of the settle.3.4settle point headingmean value of ten readings taken at 20 min intervals after the compass has settled as defined in 3.33.5settle point errordifference between the settle point heading as defined in 3.4 and the true heading3.6er
33、rordifference between the observed value and the settle point heading as defined in 3.43.7bearing repeater compassdevice that reproduces the master compass card at a remote location3.8compass cardgraduated dial of the compass which indicates the measured direction of the meridian3.9latitude errorerr
34、or to which some gyro-compasses are subject, the magnitude and sign of which depend upon the local latitudeNote 1 to entry: Means are provided for correcting this error.3.10speed errorerror to which gyro-compasses are subject, the magnitude and sign of which depend upon the speed, course, and latitu
35、de of the shipNote 1 to entry: Means are provided for correcting this error.3.11lubber lineindex line situated on the body of a compass against which the compass heading is read3.12master compassmain compass unit which supplies the heading information to the repeaters and other navigational aids3.13
36、scorsby tabletest machine which independently oscillates a platform about three axes; it is used to simulate the motion of a ship4 ConstructionGyro-compass units shall conform to the following requirements.DIN ISO 8728:2017-05 7 4.1 The equipment shall be capable of continuous operation under condit
37、ions of vibration, humidity, change of temperature and variations of the power supply as specified in 6.10.1 to 6.10.5.4.2 For those ships which are required to carry bearing repeater compasses, the construction of these shall be as follows.a) The bearing repeater compass shall be designed to be fit
38、ted with an azimuth reading device.b) A gimbal mechanism shall be provided to enable the bearing repeater compass card to be held horizontally against the ships motion.c) Any bearing repeater compass intended for use on an open deck shall be waterproof.4.3 The compass card shall be graduated at equa
39、l intervals of 1 or fraction thereof.The graduation error shall be less than 0,2.A numerical indication shall be provided at least at every 10, starting from 000 clockwise through 360.4.4 Fully adequate illumination shall be provided to enable the reading of all compass cards at all times. Facilitie
40、s for dimming shall be provided.4.5 Both master compass and repeater compasses shall be provided with a lubber line to indicate the ships heading.4.5.1 The base or some other fixed extremity of the compass shall be marked or identified in such a way as to facilitate the installation of the compass i
41、n a ship, so that the lubber line lies in a vertical fore-and-aft plane of the ship. Where a gyro-compass has the facility of introducing a correction by moving the lubber line, the correction during installation shall be set to zero.If such marks or identifications are not in the same vertical plan
42、es as the uncorrected lubber line, then the horizontal angular relationship between them shall be clearly indicated.4.6 Means shall be provided for correcting the errors induced by speed and latitude. Graphical or tabular means of correction can be used.4.7 Steps shall be taken to eliminate as far a
43、s is practical, the causes of and to suppress electromagnetic interference between the gyro-compass and other equipment on board.4.8 Mechanical noise from all units shall be so limited as to ensure the hearing of sounds on which the safety of the ship may depend.4.9 The equipment shall be so constru
44、cted that it is readily accessible for maintenance purposes.4.10 An automatic alert1)shall be provided to indicate malfunctions of the system or a power failure in the gyro-compass. The alert shall conform to the presentation and handling requirements of Bridge Alert Management IMO Res. MSC.302(87).
45、 A suitable interface shall be provided for alert communications with an Integrated Navigation System IMO Res. MSC.252(83) and IEC 61924-2.The following sentences shall be provided for the alert communications interface:Sentences transmitted by the gyro-compass: ALR, HBT: See IEC 61162-1;1) The term
46、 “alarm” was replaced by “alert” in accordance with IMO Resolution MSC.252(83) and IMO Resolution MSC.302(87).DIN ISO 8728:2017-05 8 ALC, ALF, ARC: See IEC 61924-2.Sentences received by the gyro-compass: ACK, HBT: See IEC 61162-1; ACN: See IEC 61924-2.4.11 Means shall be incorporated for the protect
47、ion of the equipment from excessive currents and voltages, transients and accidental reversal of power supply polarity.4.12 If provision is made for operating the equipment from more than one source of electrical energy, arrangements for rapidly changing from one source of supply to the other shall be incorporated.4.13 The gyro-compass shall be designed to enable heading information to be provided to other navigational aids.5 Performance requirements5.1 Accuracy in latitudes up to 605.1.1 Settling timeWhen switched on in accordance with th
