交通运输GMDSSChapter1.pptx
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1、GMDSSCommunication ServicesNavigation College Yang Jiaxuan2024年年9月月30日日OutlinesGlobal Maritime Distress and Safety SystemDistress,Urgency and Safety CommunicationsSatellite Communication ServicesMaritime Mobile ServiceMaritime Safety Information Under the GMDSSSpecial ServicesGMDSS Communication Ser
2、vicesChapter 1 GMDSS1.1 GMDSS Overview1.2 Carriage Requirements for Ship Stations1.3 Licences,Radio Safety Certificates,Inspections and Surveys1.4 Test of Radio EquipmentGlobal Maritime Distress and Safety System1.1 GMDSS OverviewIMO(International Maritime Organization)had begun work on the Global M
3、aritime Distress and Safety System(GMDSS)in the 1970s and its introduction marked(indicated,expressed)the biggest change to maritime communications since the invention of radio.The 1988(GMDSS)amendments(correction)to the SOLAS(The Convention for the Safety of Life at Sea)convention(treaty;a formal a
4、greement)was adoption(the act of starting to use a particular resolution)on 11 November 1988 and the entry into force(begin to implement put into force)was on 1 February 1992.1.1 GMDSS OverviewThe amendments which replaced(substituted)the existing Chapter IV/4 phased(step by step;make schedule)in th
5、e introduction of the GMDSS in stage between 1993 and 1 February 1999.The basic concept of the system is that search and rescue authorities(person or group of people with power or right)ashore,as well as ships in the vicinity(near by),will be rapidly alerted in the event of an emergency.1.1 GMDSS Ov
6、erviewGMDSS was introduced to provide a comprehensive(completed;full;in all aspect)communication system available(useable)for use for distress and search(scout;look for)and rescue(salvage;save)(SAR)operations.GMDSS is an enhanced(strength)Search and Rescue(SAR)system using automation and advanced sa
7、tellite and MF/HF/VHF radio communication technology.The system is a combination of(consist of):1.1 GMDSS Overview1 GMDSS CompositionSatellite communicationsMF/HF/VHF Radio telephoneRadio telex(Narrow Band direct Printing Telegraphy)Search and rescue radar transponders(responder)(SART)Satellite EPIR
8、B Data transmission,Digital Selective Calling(DSC)Two-way VHF radiotelephone;and NAVTEX(navigational telex)receiver.1.1 GMDSS Overview2 GMDSS FunctionsThe concept of GMDSS lays down/制定制定(to declare or state firmly or officially;define;prescribe)nine specific functions which all ships need to be able
9、 to perform irrespective/不顾、不考虑不顾、不考虑 of which sea area they will be operating in.These functions are:1.1 GMDSS Overview2 GMDSS Functions1.Transmitting ship to shore distress alert.1.1 GMDSS Overview2.Transmitting and receiving ship to ship distress alerts.5.Transmitting and receiving on-scene(spot)
10、communications3.Receiving shore to ship distress alerts4.Transmitting and receiving search and rescue coordinating(to make people working together so as to increase effectiveness)communications by at least two separate/不同的不同的 and independent/独立的独立的 means,each using a different radio communication se
11、rvice 2 GMDSS Functions6.Transmission and receipt of locating(fix position)signals1.1 GMDSS Overview7.Receipt of maritime safety information(MSI)8.Transmitting and receiving general radio communications to and from shore based radio systems or networks9.Transmitting and receiving bridge(the raised p
12、art of a ship on which the captain and other officers stand when on duty)to bridge communications.Distress alertsThe distress alerting signals(something intended to warn,command,such as special sound or action)are transmitted by a vessel in distress primarily/主要主要地地 根本上根本上to shore-based authorities
13、as well as shipping in the vicinity to indicate(to show or make clear,esp.by mean of sign)that the vessel is in imminent/迫切的迫切的,危急的危急的,逼近的逼近的,即将临头的即将临头的(forthcoming,be about to)danger and requires assistance.1.1 GMDSS OverviewSAR coordinating communicationThis relates to communication between ships
14、and aircrafts taking part in(participate)SAR activities and includes communication to and from Rescue Coordination Centers by the on-scene commander(leader),in the distress area.1.1 GMDSS OverviewOn-scene communicationsThese relate to communications associated with/和和.来往来往,和和.共事共事,同同.联合联合 SAR activi
15、ties and normally using RT or NBDP on the designated(to choose for particular purpose)safety frequencies in the MF and VHF bands.Simplex is used on RT and Forward Error Correction mode is used with NBDP.1.1 GMDSS OverviewLocating signalsThese improve the chance of survivals(the fact or likelihood of
16、 surviving),they are used as homing devices/归归 航航 设设 施施 to locate a distressed vessel and/or survivors(a person who has continued to live in spite of coming close to death)by transmitting signals which can be received as distinctive/明明显显不不同同的的,特特别别的的(unique)signals on the searching ship or aircrafts
17、 radar.1.1 GMDSS OverviewMSIGMDSS provides for dissemination/传传播播,散散布布of important navigational,meteorological information to shipping by automatic means on different frequency bands to ensure maximum coverage.1.1 GMDSS OverviewGeneral radiocommunicationThis is designed to cope with(deal with)what b
18、y far/到到目目前前为为止止will be the most widely used of the nine functions listed,namely general(routine)commercial radio traffic(communication),either ship to shore,shore to ship or inter ships.This may be in the form of telephone,telex,data exchange etc.on all the necessary frequencies to provide a good q
19、uality service.1.1 GMDSS OverviewBridge to bridge communications A VHF RT service available for inter ship communication relating to the assistance of the safe movement of shipping.1.1 GMDSS Overview3 GMDSS Areas GMDSS determines/确确定定;限限定定,规规定定 the way in which radio equipment is fitted to a ship,un
20、der the 1974 SOLAS Convention this is based on tonnage while the new system switches(change)the emphasis/强强调调,加加强强重重(special force or attention given to something to show that is particular important)on to the vessels trading贸贸易易的的,商商业业的的;从从事事商商业业的的pattern(model;type)to determine the type of equipme
21、nt fitted.Four distinct独独特特的的;性性质质或或种种类类不不同同的的sea areas have been designated(to choose for particular purpose).1.1 GMDSS Overview3 GMDSS Areas Ships radio equipment has been considered in terms of(according to)the range of the communications system in use and the areas in which the ship will trade,t
22、hus four areas have been specified.A1A2A3A41.1 GMDSS OverviewA1 An area within the coverage range of at least one VHF coast station in which continuous DSC alerting is available.This is approximately(about)2030 miles,i.e.line of sight(view).1.1 GMDSS OverviewA2 Within the coverage range of a shore-b
23、ased MF coast station operating in the 2-3 MHz band in which continuous DSC alerting is available,approximately 100 miles range.Excludes area A1 1.1 GMDSS OverviewA3-This excludes(not include)areas A1 and A2.It is the area within the coverage of an INMARSAT geostationary(synchronized)satellite in wh
24、ich continuous alerting is available1.1 GMDSS OverviewA4 The remaining(be left after others have gone)sea area outside areas A1,A2,A3.1.1 GMDSS Overview1.2 Carriage Requirements of Ship StationsCariage RequirementsPart C of the SOLAS Amendments/修修正正案案1988 provides information on the equipment requir
25、ed by GMDSS ships and the alternative/两两 者者 择择 一一 的的(substitute;option)arrangements permitted in the various sea areas.1.2 Carriage Requirements of Ship StationsSummarizeA1:VHF equipment and either a VHF EPIRB or satellite EPIRB.1.2 Carriage Requirements of Ship StationsA2:VHF and MF equipment and a
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