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Tổng quan hệ thống GMDSS phục vụ TKCN. Năm 1979,Tổ chức Hàng Hải quốc tế (International Maritime Organization IMO) đã tổ chức hội nghị về vấn đề tìm kiếm và cứu nạn trên biển. ... Hệ thống mới được tự động hóa và sử dụng sóng vô tuyến trái đất và vệ tinh cho báo động cấp cứu và các thông tin theo sa
Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A When an external MF DSC test is carried out, a fault condition is displayed on the transmitter Immediate action should be taken to isolate the antenna and retest check the location of MF transmitter fuses in the operational manual consult the fault finding guide in the operational manual carry out an internal DSC test as per the operational manual A DSC equipment operating on VHF Ch.70 should be tested daily by means of a test call with a coast station weekly by means of an internal test weekly by means of a test call with a coast station daily by means of an internal test A EPIRBs should be checked and tested weekly daily monthly annually A An on-load test of the radio batteries can be done by operating the transmitter on full power and with the battery charger on while observing the discharge current off while observing the battery voltmeter off while observing the discharge current on while observing the battery voltmeter A A full specific gravity check of a liquid lead acid battery should be carried out daily weekly monthly once per international voyage A When making RT test signals for transmitter adjustment, the call should include the position of the station making the test an indication of the mode of emission being used an indication of the frequency to be used the identification of the station making the test A At least once per month a test should be carried out to check the correct functioning of the NAVTEX receiver each SART for signs of damage the reserve source of energy, when it is not a battery that each printer has an adequate supply of paper A The following equipment should be tested at least once a month SART, EPIRB and handheld VHF sets B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an Cau hoi A B C D Dap an operation of 2182 kHz receiver each printer for adequate paper reserve source of energy if it is not a battery A The following equipment should be tested at least once a week SART, EPIRB and handheld VHF sets reserve source of energy if it is not a battery operation of 2182 kHz receiver each printer for adequate paper A EPIRBs should be tested without using the satellite system at intervals not to exceed once a year week day month A MF DSC equipment should be tested monthly, by means provided by the equipment weekly, by contacting a coast station weekly, by means of an internal test monthly, by contacting a coast station A The battery voltage of the GMDSS radio installation should be checked monthly weekly at start of voyage only daily A The print out of a Navtex self test shows a signal test pass but a noise test fail Immediate action should be taken to check that the receiver is set up to receive the correct message types consult the fault finding guide in the operational manual check the amplifier fuses check receiver is set up to receive stations for your area A The following equipment should be tested at least once a month and details entered into radio log SART, EPIRB and handheld VHF sets reserve source of energy if not a battery each printer for adequate paper NAVTEX A