Ref: GMDSS System, CES. Ref: GMDSS System, Coast Station, Call Sign How does a coast radio station communicating by HF radio normally identify itself?

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1 eck Safety What is meant by "ES"?. oast Earth Satellite. oast Earth Station GMSS SYSTEM Ref: GMSS System, ES. entral Equatorial Station. oastal Equivalent Station Ref: GMSS System, oast Station, all Sign How does a coast radio station communicating by HF radio normally identify itself?. y its subscriber number. y its MMSI. y its call sign. y its MI Ref: GMSS System, oast Station, Traffic How often does a coast radio station that regularly broadcasts traffic lists transmit the list?. s often as is deemed necessary to effect delivery. No less often than every four hours. Only on an as-needed basis. Once per 24-hour period Ref: GMSS System, istress, cknowledge You are underway in mid-ocean, when you hear a distress message over the VHF radio. The position of the sender is 20 miles away. What action should you take?. Immediately acknowledge receipt of the distress message.. efer acknowledgment for a short interval so that a coast station may acknowledge receipt.. o not acknowledge receipt until other ships nearer to the distress have acknowledged.. o not acknowledge because you are too far away to take action Ref: GMSS System, istress, lerting Which frequencies and modes are allocated for distress alerting in GMSS?. 406 MHz via EPIR MHz via INMRST. hannel 70 S plus six (6) MF/HF S frequencies. ll of the above Ref: GMSS System, istress, Relay You are underway in mid-ocean when you hear a distress message. The position of the sender is 150 miles away. No other vessel has acknowledged the distress. Your maximum speed is 5 knots and due to the seriousness of the distress, you cannot arrive on scene to provide effective assistance. What action should you take?. o not acknowledge the distress message.. Send an urgency message about the distress.. Use the signal MYY RELY and transmit the distress message.. Transmit a message as though your vessel was in distress Ref: GMSS System, NVTEX, MSI Which categories of NVTEX messages may not be selectively rejected through receiver programming?. Navigational warnings. Weather warnings. SR information. ll of the above Ref: GMSS System, NVTEX, MSI Which category of NVTEX messages may be rejected in some receivers, UT SHOUL NOT?. ategory L navigational warnings. ategory navigational warnings. SR and distress alert information. Weather warnings ll rights reserved 1

2 eck Safety GMSS SYSTEM efine the acronym MSI.. Maritime Safety Information. Maritime Shipping Index Ref: GMSS System, NVTEX, MSI. Maritime Satellite Indicator. Mariner Safety Intelligence Ref: GMSS System, NVTEX, MSI To ensure receipt of all relevant MSI, a NVTEX receiver should be turned on at least how many hours prior to departure from port? What is the primary equipment for receiving MSI?. SRT. EPIR Ref: GMSS System, NVTEX, MSI. NVTEX. INMRST Ref: GMSS System, On-Scene, omms Which channel has been designated for on-scene communications in GMSS? and Ref: GMSS System, Radio Station, FR What should the GMSS radio operator consult to review the proper procedures to be followed in distress situations under GMSS?. IMO recommendations. The manufacturers instruction manuals. Part 90 of the F Rules and Regulations. Part 80, Subpart W of the F Rules and Regulations Ref: GMSS System, Radio Station, FR Where can GMSS regulations pertaining specifically to U.S.-flag vessels be found?. These are located in IR #476.. These are located in F Part 83.. These are published only by the U.S. oast Guard.. These are located in 47 FR Part Ref: GMSS System, Radio Station, FR Which documents are required by Part 80 of the F Rules for vessels on international voyages (other than the Great Lakes)?. ppropriate Safety onvention ertificate. International list of ship call signs (ITU List VI). List of Radio determination and Special Service Stations (ITU List VI). ll of the above Ref: GMSS System, Radio Station, efinition, What is the basic concept of GMSS?. Search and rescue authorities ashore can be alerted to a distress situation.. Shipping in the immediate vicinity of a ship in distress will be rapidly alerted.. Shoreside authorities and vessels can assist in a coordinated SR operation with minimum delay.. ll of the above Ref: GMSS System, Radio Station, efinition Which message categories cannot be disabled by the GMSS Radio Operator?. Navigational warnings. Search and Rescue information. Meteorological warnings. ll of the above ll rights reserved 2

3 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, istress How is a distress message normally initiated through INMRST?. ll INMRST units have a dedicated key that can be pressed for immediate action.. y adding the word "ISTRESS" in the first line of the message's preamble. ertain INMRST units have a dedicated key that can be pressed for immediate action, while other systems provide menu-driven features.. y transmitting the distress message on the U.S. oast Guard's dedicated monitoring channel Ref: GMSS System, Radio Station, istress What is the most appropriate action for a GMSS Radio Operator to take in a distress situation where immediate help is needed, but the vessel is not sinking nor needs to be abandoned?. Switch off EPIR and SRT manually.. Transmit istress call by MF/HF, VHF or INMRST.. Notify the R (Rescue oordination enter) through VHF FM on hannel 13.. Transmit istress call by activating the radiotelegraph automatic alarm signal Ref: GMSS System, Radio Station, istress What is usually the first step for a GMSS Radio Operator to take when initiating a distress priority message via INMRST?. ialing the correct code on the telephone remote unit. Pressing a "istress Key" on the equipment. ontacting the ES operator and announcing a distress condition is in existence. ontacting the ES operator using the radiotelephone distress procedure "Mayday"...etc Ref: GMSS System, Radio Station, istress Which action should be taken on receipt of a GMSS istress alert?. Read the display screen and/or printout.. Silence the alarm.. Listen for any follow up voice/telex transmission on the appropriate frequency.. ll of the above Ref: GMSS System, Radio Station, istress omms Which statement concerning GMSS distress alerts is TRUE?. Information contained in a distress alert includes the name and position of the distressed vessel, and may include additional information such as the nature of the situation and what kind of assistance that may be required.. istress alerts may be used to alert other vessels, including those in port, of existing navigational hazards.. istress alerts may be used to alert other vessels, including those in port, of existing weather warnings.. vessel in the vicinity of a distress situation may leave the area without notifying the R that is overseeing the operation Ref: GMSS System, Radio Station, EG Which system may be useful for messages, such as local storm warnings or a shore-to-ship distress alert, for which it is inappropriate to alert all ships in the satellite coverage area?. NVTEX. EG. MVER. S Ref: GMSS System, Radio Station, HF SITOR Which system is most likely to be subject to fading or static interference?. HF SITOR. igital Selective alling on channel 70. INMRST. VHF RQ Ref: GMSS System, Radio Station, INMRST Which system is least likely to be affected by atmospheric disturbances?. NVTEX. INMRST. MF NP. HF NP ll rights reserved 3

4 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, INMRST Which system is least likely to be subject to fading or static interference?. HF SITOR. igital Selective alling on channel 70. INMRST. VHF RQ Ref: GMSS System, Radio Station, INMRST Which system provides maximum communications range?. MF SITOR. igital Selective alling on KHz. INMRST. VHF RQ Ref: GMSS System, Radio Station, INMRST-, What is the best method to overcome the effects of shadowing when attempting to place an INMRST call?. small course change should work.. Select a ES that serves the INMRST satellite that will handle the call.. Installing a shadow correction filter will compensate in fringe areas.. Turning on compensators will work in all but extreme cases of shadowing Ref: GMSS System, Radio Station, Inspection uring an annual F inspection.. all required documents and publications may have to be produced. licensed GMSS radio operators may be required to demonstrate equipment competencies. all required equipment must be fully operational. ll of the above Ref: GMSS System, Radio Station, Inspection How often must a compulsory vessel's GMSS radio station be inspected?. nnually, by the U.S. oast Guard. nnually, by the F or designated authority. nnually, by the F, and every six months if the vessel sails outside of the Sea reas 1 and 2. The F's annual inspection may be waived if, and only if, monthly inspections are performed by the vessel's onboard GMSS Radio Maintainer Ref: GMSS System, Radio Station, Inspection What periodic inspection is required in order to remain in compliance with the regulations regarding GMSS ship radio station inspections?. U.S. oast Guard annual inspection. n inspection at least once every 12 months by the F or a holder of a GMSS Maintainers license. F inspection every five years. Periodic inspections not required if on board maintainers perform routine preventive maintenance Ref: GMSS System, Radio Station, Logs How long must GMSS Radio Logs be retained by the licensee when they relate to a distress situation or disaster?. 6 months. 2 years. 1 year. 3 years Ref: GMSS System, Radio Station, Logs How long must GMSS Radio Logs be retained onboard the ship in original form?. 30 days. 6 months. 3 months. 1 year Ref: GMSS System, Radio Station, Logs How long must the GMSS radio log be retained on board before sending it to the shoreside licensee?. t least two years after the last entry. t least 90 days after the last entry. t least one year after the last entry. t least 30 days after the last entry ll rights reserved 4

5 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, Logs If you log a distress message, it must include the.. sea state. time of its occurrence. names of witnesses. wind direction and velocity Ref: GMSS System, Radio Station, Logs Radio station logs involving communications during a disaster shall be kept by the station licensee for at least.. 4 years from date of entry. 2 years from date of entry. 3 years from date of entry. 1 year from date of entry Ref: GMSS System, Radio Station, Logs Where is the GMSS Radio Logbook kept aboard ship?. ttached to the eck Logbook. In the hief Mate's office. t the principal radio operating location. In the Master's office Ref: GMSS System, Radio Station, Logs Where should the GMSS radio log be kept on board ship?. In the aptain's office. t the GMSS operating position. In the sea cabin. nywhere on board the vessel Ref: GMSS System, Radio Station, Logs Which statement concerning GMSS Radio Operator requirements is FLSE?. Each compulsory vessel must carry at least two licensed GMSS Radio Operators at all times while at sea.. Each compulsory vessel must carry at least two licensed GMSS Radio Operators at all times while at sea and may elect to carry a GMSS Radio Maintainer as well.. ommunications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications.. While at sea, adjustments to, and the maintaining of, GMSS equipment may be performed by the GMSS Radio Operator as long as the work is supervised by an onboard licensed GMSS Radio Maintainer Ref: GMSS System, Radio Station, Logs Which statement concerning GMSS Radio Operator requirements is FLSE?. Each compulsory vessel must carry at least two licensed GMSS Radio Operators at all times while at sea.. Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMSS Radio Maintainer as well.. ommunications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications.. While at sea, adjustments to, and the maintaining of, GMSS equipment may be performed by the GMSS Radio operator as long as the work is supervised by an onboard licensed GMSS Radio Maintainer Ref: GMSS System, Radio Station, Logs Which statement is TRUE?. GMSS radio logs are required to contain entries pertaining to all incidents connected to radio communication service which appear to be of importance to the safety of life at sea.. ll distress communications must be entered in the GMSS radio log.. oth of the above. None of the above Ref: GMSS System, Radio Station, Logs Which statement pertaining to log keeping is TRUE?. Entries relating to pre-voyage, pre-departure and daily tests are required. oth and. ll istress, Urgent and Safety communications that affect the station's own ship must be logged. Routine daily MF-HF and INMRST- transmissions do not have to be logged ll rights reserved 5

6 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, Maintenance What is the minimum permit or license requirement of a GMSS Radio Maintainer?. Holding the Marine Radio Operator Permit is a pre-requisite before the GMSS Maintainer Endorsement can be obtained. Holding a valid GMSS Radio Operator license is sufficient. Holding the GMSS Radio Maintainer license is sufficient. Holding the GMSS Radio Operator license for at least one year is a prerequisite to holding the GMSS Radio Maintainer license Ref: GMSS System, Radio Station, Maintenance Which statement concerning GMSS maintenance requirements is FLSE?. ompulsory vessels sailing in Sea reas 1 and 2 must provide any one of the three maintenance options which are duplication of equipment, shore-based or at-sea maintenance capability.. ompulsory vessels sailing in Sea reas 3 and 4 must provide any two of the three maintenance options which are duplication of equipment, shore-based or at-sea maintenance capability.. If shore-based maintenance is used, maintenance services do not have to be completed or performance verified unless the vessel will be sailing to a non-us port.. Equipment warranties do not satisfy GMSS maintenance requirements Ref: GMSS System, Radio Station, Maintenance Which statement concerning maintenance requirements is FLSE?. ompulsory vessels sailing in Sea reas 1 and 2 must provide any one of the three maintenance options which are duplication of equipment, shore based or at-sea maintenance capability.. ompulsory vessels sailing in reas 3 and 4 must provide any two of the three maintenance options which are duplication of equipment, shore based or at-sea maintenance capability.. If shore-based maintenance is used, maintenance services do not have to be completed or performance verified unless the vessel will be sailing to a non-us port.. Equipment warranties do not satisfy GMSS maintenance requirements Ref: GMSS System, Radio Station, Maintenance Which statement is generally correct regarding the maintenance requirements for ships under GMSS?. Redundancy of functions of certain equipment will partially meet this requirement.. On-board maintenance provided by a person holding a GMSS maintainer's license will partially meet the requirements.. Shoreside maintenance and scheduled tests and inspections will partially meet this requirement.. ll of the above Ref: GMSS System, Radio Station, MF/HF Which system is most likely to be affected by atmospheric disturbances?. MF/HF radiotelephony. INMRST. VHF S. SafetyNET Ref: GMSS System, Radio Station, On-Scene Which channel has been designated for on-scene communications in GMSS? and Ref: GMSS System, Radio Station, Operation Proper GMSS watchkeeping includes.. monitoring all required frequencies in the proper mode. reading all displays and/or printouts after silencing an alarm. notifying the Master of any distress alerts. ll of the above ll rights reserved 6

7 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, Operation Proper GMSS watchkeeping includes.. understanding the GMSS console's normal operational indicators. maintaining a proper GMSS radio station log. responding to and comprehending alarms. ll of the above Ref: GMSS System, Radio Station, Operation What publication/s should a GMSS Operator consult regarding the proper set-up and operation of vessel equipment?. ITU Publications. The manufacturers instruction manuals. Part 90 of the F Rules and Regulations. ode of Federal Regulations, Title 47, Part 80, Subpart W` Ref: GMSS System, Radio Station, Operation Which references should the GMSS radio operator consult for information on the proper operation of the equipment?. ITU list of Equipment Operations. The manufacturer's operating manuals. 47 FR Part 80. Information available through SafetyNET channels Ref: GMSS System, Radio Station, Operation Which statement is TRUE?. Key letters or abbreviations may not be used in GMSS radio logbooks under any circumstance.. Urgency communications do not need to be entered in the GMSS radio log.. oth of the above. None of the above Ref: GMSS System, Radio Station, Operator What is the minimum license requirement of a GMSS Radio Operator?. Holding the Marine Radio Operator Permit is a pre-requisite before the GMSS Radio Operator Endorsement can be obtained.. Holding the General Radiotelephone Operator License with RR endorsement is sufficient.. Holding a valid GMSS Radio Operator License is sufficient.. Holding either the General Radiotelephone Operator License or the First or Second lass Radiotelegraph License with GMSS Radio Maintainer's Endorsement is sufficient Ref: GMSS System, Radio Station, Operator Which maintenance functions can a GMSS Radio Operator perform?. The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent.. The Operator is responsible for ensuring that INMRST antennas are free of built-up soot and clear of obstacles.. ll levels of maintenance must be performed by a licensed GMSS Radio Maintainer.. The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints Ref: GMSS System, Radio Station, Port For GMSS, when may a compulsory vessel not be allowed to leave port?. When the vessel is in an overloaded condition. When the vessel has arranged for both duplication of equipment N shore-based maintenance. When the vessel has replaced a required piece of GMSS-related equipment but its performance has not been verified or logged. When the vessel is carrying only two licensed GMSS Radio Operators and is capable of performing all required functions 7 ll rights reserved

8 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, Port What are the conditions, under GMSS, whereby a ship is NOT allowed to depart from any port?. The vessel is not capable of performing all required distress and safety functions.. The vessel is carrying more than the required number of qualified GMSS radio operators.. The vessel has a temporary waiver of its radio license and Safety ertificate.. The vessel is not carrying a GMSS radio maintainer, but has provided for shoreside maintenance plus duplication of equipment if required Ref: GMSS System, Radio Station, Power Supply Which statement concerning reserve sources of energy for GMSS is FLSE?. While the ship is at sea, there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energy.. oth the VHF and MF/HF installations must be simultaneously supplied.. means of ensuring a continuous supply of electrical power must be provided to all GMSS equipment that could be affected by an interruption in power.. If a uninterrupted power supply or equivalent is used to supply power to the ship's GPS receiver or other source of positional information, a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power Ref: GMSS System, Radio Station, Radiation Which statement concerning exposure to microwave signal radiation is TRUE?. There is minimal hazard potential as long as the Operator notifies other system users aboard the vessel that the potential exists.. The INMRST- ray dome normally prevents nearby persons from being able to determine the direction of the internal antenna.. There is equally significant hazard potential from all INMRST antenna systems.. F type acceptance regulations require that radiated power be kept to a minimum so as to prevent hazard potential Ref: GMSS System, Radio Station, Radiation Which statement concerning exposure to radiation is TRUE?. The INMRST unit's ray dome filters out potentially dangerous UV rays.. ertain INMRST systems will automatically transmit when called and can expose an individual to harmful radiation.. INMRST- and antennas are safe because they are omnidirectional.. n INMRST- antenna must be carefully avoided because it focuses the transmitter's signal into a fine beam of energy Ref: GMSS System, Radio Station, Required On which vessels is GMSS required?. ll vessels capable of international voyages. Vessels operating outside of the range of VHF coastal radio stations. SOLS onvention ships of 300 gross tonnage or more.. oastal vessels of less than 300 gross tons Ref: GMSS System, Radio Station, Required What are the vessel equipment and personnel requirements for GMSS?. Two licensed GMSS radio operators. istress alerting and response. Equipment carriage requirements. ll of the above Ref: GMSS System, Radio Station, Required What is a functional or carriage requirement for compulsory vessels?. compulsory vessel must carry at least two F licensed GMSS Radio Operators.. compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sails.. compulsory vessel must be able to transmit and respond to istress alerts.. ll of the above ll rights reserved 8

9 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, Required Which communications functions must all vessels be capable of performing under GMSS as defined by the International Maritime Organization?. Radio direction finding. istress alerting to and from vessels, search and rescue coordination, on-scene communications, signals for locating, Maritime Safety Information, general and bridge-to-bridge communications.. ommunications in each of the operational ocean areas. ll communications possible within the International Safety-NET service Ref: GMSS System, Radio Station, Required Which documents are required by GMSS for vessels on international voyages (other than the Great Lakes)?. copy of the IMO master plan of shore-based facilities. Station logs. 47 FR Part 80 F Rules and Regulations. ll of the above Ref: GMSS System, Radio Station, Sea rea In which Sea rea must a compulsory vessel carry either INMRST or HF SITOR equipment?. This equipment must be carried at all times at sea regardless of where the vessel will be operating.. This equipment partially satisfies the carriage requirement for vessels operating in Sea rea 3.. This equipment satisfies in full the carriage requirement for vessels operating in Sea rea 2.. HF SITOR equipment partially satisfies the carriage requirement for vessels operating in Sea rea 3, but INMRST equipment must be carried to satisfy the requirement when the vessel is in Sea rea Ref: GMSS System, Radio Station, Testing t sea, all required GMSS equipment (other than survival craft equipment) must be proven operational by.. daily testing. operational use of the equipment. either or. testing at least every 48 hours Ref: GMSS System, Radio Station, Testing The best way to test the INMRST- terminal is to.. send a message to a shore terminal and wait for confirmation. compose and send a brief message to your own INMRST- terminal. send a message to another ship terminal. see if the send light flashes, then proper operation has been confirmed Ref: GMSS System, Radio Station, Vessel For GMSS, which statement concerning a compulsory vessel is FLSE?. conditional or partial exemption may be granted, in exceptional circumstances, for a single voyage outside the sea area for which the vessel is equipped.. Once a compulsory vessel's GMSS station has been fitted and inspected, the station must be inspected only once every five years.. ll passenger vessels regardless of size and all cargo vessels that are 300 Gross Tons or larger must comply.. ompulsory vessels must carry at least two licensed GMSS Radio Operators for istress and Safety radio-communications purpose Ref: GMSS System, Radio Station, Vessel For GMSS, which statement concerning compulsory vessels is TRUE?. Vessels over 500 gross tons must carry at least three licensed GMSS Radio Operators.. Passenger vessels between gross tons need to carry only one licensed GMSS Radio Operator, but passenger vessels larger than 500 must carry two licensed Operators.. Vessels larger than 500 gross tons must carry certain additional GMSS equipment than what a vessel between gross tons must carry.. Vessels between gross tons need to carry no more than one EPIR, SRT and survival craft transceiver, but vessels larger than 500 gross tons must carry two of each unit. 9 ll rights reserved

10 eck Safety GMSS SYSTEM Ref: GMSS System, Radio Station, Vessel What is a GMSS functional or carriage requirement for compulsory vessels?. compulsory vessel must carry at least two (2) licensed GMSS operators. compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sails.. compulsory vessel must be able to transmit and respond to istress alerts.. ll of the above Ref: GMSS System, Radio Station, VHF S Which system has the least effective radius of operation?. HF SITOR. VHF S. MF NP. NVTEX Ref: GMSS System, R, istress omms How is "radio silence" imposed?. y the Rescue oordination enter (R) controlling the distress communications on that frequency or channel. y the oast Earth Station (ES) controlling the distress communications on that frequency or channel. y the Public orrespondence Station (PS), controlling the distress communications on that frequency or channel. y the High Seas Service (HSS) controlling the distress communications on that frequency or channel Ref: GMSS System, R, istress omms Who is responsible for transmitting a message stating that distress communications have ceased?. The Rescue oordination enter (R) controlling the distress communications. The vessel providing the initial communications with the distressed vessel. The oast Radio Station (RS) that was first contacted concerning the distress situation. No formal message must be transmitted as long as no distress-related communications have occurred after reasonable time Ref: GMSS System, R, Silence How is "radio silence" imposed?. y the On Scene oordinator (OS). y the oast Earth Station (ES) controlling the istress communications on that frequency. It is imposed by the Public orrespondence Station (PS) controlling the distress communications on that frequency or channel. It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel Ref: GMSS System, R, Silence What is meant by the term "radio silence"?. Stations not directly involved with the ongoing istress communications may not transmit on the distress frequency or channel. Stations remaining off the air to safeguard proprietary information. Two three-minute silent periods, at 15 and 45 minutes after the hour, that provide a transmitting "window" for distressed vessels to transmit distress alerts using J3E. ommunications on a distress frequency or channel is banned for 24 hours following the cessation of the distress traffic Ref: GMSS System, R, Silence What is the fundamental purpose for imposing radio silence?. To ensure that interference to proprietary communications is minimized. To ensure that only voice communications can be effected on the distress frequency or channel. To ensure that a distressed vessel will have a "window" twice each hour for transmitting routine messages. To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized ll rights reserved 10

11 eck Safety GMSS SYSTEM Ref: GMSS System, R, Silence When can routine communications be resumed when radio silence has been imposed?. fter determining that the frequency or channel appears to be no longer in use. fter determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications. Routine communications can resume after the Rescue oordination enter transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded.. If, in the Master's opinion, communications on that frequency will interfere with emergency communications Ref: GMSS System, Safety NET, MSI Marine Safety Information is promulgated via satellite through which system?. MVER. NVTEX. SafetyNET. INMRST-M SES Ref: GMSS System, Safety NET, MSI What is the best instrument for establishing a safe working area before welding in a confined space?. n oxygen indicator. combustible gas indicator. combination combustible gas and oxygen indicator. flame safety lamp Ref: GMSS System, Safety NET, MSI Which kind(s) of broadcasts are available through Safety NET?. MSI and messages to pre-defined groups of subscribers. MSI and vessel traffic lists. Hourly NO weather broadcasts from the NWS. oastal weather broadcasts Ref: GMSS System, Safety NET, MSI Which satellite system promulgated Maritime Safety Information?. MVER. NVTEX. SafetyNET. INMRST-M SES Ref: GMSS System, SS, 2182 If your rig is equipped with a SS radio, what frequency would you use to initiate a distress call? khz khz khz khz Ref: GMSS System, SS, 2670 fter receiving your distress call, the U.S..G. may ask you to switch to which SS frequency? Ref: GMSS System, SS The range of a SS transmission is MOST affected by.. atmospheric noise and radiated power. the frequency band selected and time of day or night. interference and position of the moon. radiated power and nearness to shore Ref: GMSS System, SS What time of day would an SS radio have the longest transmitting range?. aylight before noon. aylight after noon. t noon. uring darkness ll rights reserved 11