GMDSS普通操作员 第06讲：Passage 39 第06讲：Passage 39.ppt

航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 航运系航海教研室 Passage 39 All MSI broadcasts made on the International MSI service are printed in the English language (sometimes a local language is added after the English wording). The GMDSS supports two independent systems for broadcasting MSI: ① The International NAVTEX Service, whereby the Information Provider forwards the MSI for a given area to a 518 kHz MF NAVTEX transmitter; note that reception of NAVTEX MSI is limited by the range of the MF transmitter to the coastal area immediately around the transmitter. Passage 39 ② The International SafetyNET Service, whereby the Information Provider forwards the MSI for a given area to an Inmarsat Land Earth Station (LES), for broadcasting via the satellite network over an entire Inmarsat Ocean Region; consequently, vessels can receive SafetyNET MSI anywhere in that Ocean Region, irrespective of their distance from the LES Information Provider. Passage 39 As indicated in Figure 5. 1 of this text book, MSI for a given area is generally broadcast over either NAVTEX or SafetyNET(except for some exceptional circumstances where a message may be broadcast using both services) ; vessels equipped with both a NAVTEX receiver and SafetyNET receiver should select the appropriate receiver to receive MSI for the area in which the vessel is operating. Where a coastal area is not covered by the International NAVTEX Service, for example around Australia, MSI for that area will be broadcast on SafetyNET. Passage 39 1. What is the best title of the passage? A. Language Used for MSI Broadcasts. B. Broadcasting MSI in GMDSS. C. The International SafetyNET Service. D. The International NAVTEX Service. 正确答案：B Passage 39 2. What language should be used in International MSI service? A. English only. B. Local language only, which is determined by the administration concerned. C. International MSI should be broadca