[单选题]A mobile earth station in the maritime mobile-satellite service which is located on board ship ,is called --- A an LEＳ B an SES C a ship station D a land Mobile station
[单选题]Every lifeboat which is fitted with a fixed two-way VHF radiotelephone apparatus with an antenna which is highly mounted shall be provided with arrangements for sitting and securing the antenna effectively in its ____.
[单选题]The NCS of INMARSAT-A system in the IOR is in ____ A Goon hilly ,UK B Yamaguchi, Japan C Perth, Australia D Southbury, USA
[单选题]All passages of deck number 3 are requested to follow the crew member _____will escort you to you assembly station A Who B whom C that D \
[单选题]________means rapid and successful reporting of a distress incident to a unit which can provide or coordinate assistance
[问答题]The transmission of a distress alert indicates that a mobile unit (ship, aircraft or other vehicle) or person is threatened by grave and imminent danger and requests immediate assistance. The distress alert shall provide the identification of the station in distress and its position. The distress alert may also contain information regarding the nature of the distress, the type of assistance required, the course and speed of the mobile unit, the time that this information was recorded and any other information which might facilitate rescue. A distress alert is false if it was transmitted without any indication that a mobile unit or person was in distress and required immediate assistance.
[单选题]________, the SART automatically emits response signals to indicate survivors’ position on the radar display.
[单选题]For ship-to-shore distress alerts ,you can use-- A INMARST ,EPIRB and DSC B NAVTEX,NBDP and R/T C INMARSAT,VHF and SART D EPIRB ,DSC and radar
[单选题]These are based currently on 4 operational regions,each with its own operational satellites, with ____satellite in the event of failure.
[单选题]----------receives MSI via INMARSAT safety Net service within the INMARSAT coverage A .a NAVTEX receiver B. an EGC receiver C. a MF/HF radio D .a VHF R/T
[单选题]When the beacon in the _____position is put into water, transmission will start independent of the switch at the top of the beacon.
[单选题]The world wide navigational_______ service, is a coordinate globe service for the broadcast by radio of vital information on hazards to marine navigation.
[单选题]The system for the broadcast and automatic reception of MSI by means of NBDP is ____ A VHF B SES C EGC D NAVTEX
[单选题]In the IMO SMCP the situation where phrases using the word “can” appear it clear_____a possibility is referred to
[单选题]COSPAS—SART is primarily used for A .improving communication is polar regions B. Providing MSI to mobile stations C .saving the system users in distress anywhere in the world D .transmitting and receiving information
[单选题]When TRON-30S S-EPIRB is____,the auto-transmitting will stare. A put into water in the upright position B switch on by the operator C stored in an inverted position D mounted up on the ship
[单选题]What part of the INMARSAT will the SES get access to if the commissioning is successful? A. The SES B .the space segment of INMARSAT C. Any CES D .the CES decided by the applicant
[单选题]____is capable of finding any 406MHZ beacon no matter where they are. A Local User Terminal B Spacecraft C Local-mode coverage D Near polar orbiting satellites
[单选题]distress alert will normally be initiated ------and all distress alerts will be acknowledge ---- A manually/automatically B manually/manually C automatically/manually D automatically/automatically
[单选题]When hearing a distress call, all station shall immediately cease any transmission capable of ------- with the distress traffic
[单选题]Stations in the United States of America are grouped by states arranged in the alphabetical order of their _____
[单选题]NAVTEX transmitter identification character B3 is a single unique letter which is allocated to each Navtex____ A receiver B SES C CES D Transmitter
[单选题]A narrower bandwidth for the transmitted signal such as SSB means that ____________ is apparent at the receiver, resulting in the more efficient transmitter power.
[单选题]Every cargo ship of ____tons gross tonnage and upwards shall be provided with at least three two-way VHF radiotelephone apparatus.
[单选题]If a ship _____in danger ,the distress signed the send out in the shortest possible time by means of the GMDSS equipment
[单选题]The service uses a single frequency with transmissions from nominated stations within each NAVARE being arranged on a time-sharing basis __.
[单选题]A station in the mobile service the emissions of which are intended to facilitate search and rescue operations is____ A EPIRB B SART C Mobile Station D Distress Alerting
[单选题]General communications____ A concern the management and operation of the ship B may affect the safety of the ship C are between ship station and shore-based communication network D A,B and C
[单选题]The present INMARSAT system------ geostationary satellites positioned above the Atlantic Ocean.
[单选题]Who will receive the distress of safety message sent by COSPAS-SARSAT system? A Shore station B Coast earth station C Ship earth station D EPIRB
[单选题]Receiving point is a mark or place_____a vessel comes under obligatory entry transit or escort procedure
[单选题]Every ship, while at sea ,shall maintain continuous watch on ----if the ship ,in accordance with the requirements of regulation 7.3.2 of SOLAS ,is fitted with VHF radio installation A channel 36 B channel 32 C channel 70 D channel 65
[问答题]The service uses a single frequency with transmissions from nominated stations within each NAVAREA being arranged on a time-sharing basis to eliminate mutual interference.All necessary information is contained in each transmission. A dedicated NAVTEX receiver which has the ability to select messages to be printed,according to: (a)a technical code(B1B2B3B4),which appears in the preamble of each message;anD (b)whether or not the particular message has already been printed. Certain essential classses of safety information such as navigational and meteorological warnings and search and rescue information are non-rejectable to ensure that ships using NAVTEX always receive the most vital information.
[单选题]The satellite and support facilities operated by INMASAT are based on____operational region A 3 B 4 C 4 D 5
[单选题]Operating method in which transmission is possible simultaneously in both directions of a communication channel is called ______ A Duplex Operation B simplex Operation C Auto- Operation D Two-way
[单选题]Digital selective calling means a technique using--------which enables radio station to establish contact with ,and transfer information to, another station or group of stations,and complying with the relevant recommendations of the CCIR. A .digital codes B .code messages C .morse codes D .distress messages
[问答题]Proper registration of your 406MHZ satellite emergency position-indicating radio beacon(EPIRB) is in intended to save one life, ? experts concerned.Lives may be saved as a result of registered emergency information.This information can be very helpful in confirming the situatin exists,and in arranging appropriate rescue efforts.Also GEOS,a geostationary National Oceanic & Atmospheric Administration system can pick up and relay an EPIRB distress alert to the RCC well before the international COSPAS-SARSAT satellite can provide location in EPIRB is properlly registered,the interrelated RCC will be able to use the registration information to immediately begin action on the case. Unregiatered,a distress alert may take as much as two hours longer to reach the interrelated RCC over the international satellite system,In EPIRB transmission is abbreviated for any reason ,the satellite will be unable to determine the EPIRB’s location ,and the RCC will be unable distress alert.Unregistered EPIRBs have needlessly cost the lives of several mariners since the satellite system became operational.
[单选题]In order to ensure that all necessary MSI is available ,the EGC receiver will remain in operation while____
[单选题]Monitoring is especially important in a highly automated system which is dependent on careful ____ procedure and format. A.adherence to B adoption to C relaying on D. usage of
[单选题]The GMDSS will be fully implemented in _____, when except for a few remaining stations, use of Morse radiotelegraphy by ships will cease.
[单选题]SOLAS vessels are able to communicate with shore stations____. A No matter where they are and what the time it is B In major oceans and at scheduled time C At regular times everyday D From some fixed position.
[问答题]A Search And Rescue radar Transponder （SART）is a means within the GMDSS for locating vessels in distress or their survival craft。The SART operates in the 9 GHz frequency band and generates a series of response signals on being interrogated by any ordinary 9 GHz shipborne radar or suitable airborne radar。No modification is required to vessels radar equipment 。SARTS can be either portable for use onboard vessel or carrying to survival craft，permanently installed on the vessel and in the survival craft or operate in a float-free position 。They may also be incorporated into a float-free satellite EPIRB。 The SART can be activated manually or automatically when placed into the water so that it will thereafter respond when interrogated.
[单选题]COSPAS-SART cannot fulfill the function of ----- A .determining the position of a distress vessel B .distress alerting and position ---fixing in Area 4 C .distress communication D. both A and B
[单选题]There are some back-up satellites in the event of failure. If the operational satellite is out of work____.
[单选题]A distress alert can be relayed from an RCC by____. A major coast stations B satellite and terrestrial communications C MF/HF and VHF stations D COSPAS-SARSAT