問題一覧
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108. Which of the listed requirements regarding VHF radiotelephone installations do not correspond to present regulations?
Cargo ships of less than 500 tons gross shall have the batteries located in the upper part of the ship
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109. According to the "Regulation and Restrictions" of the mariphone licence, how would you define the mariphone?
apart from its position as indicated alsobe used in other places provided its call sign is at least transmitted once at the start and at the end of each transmission
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110. Which of the following types/sizes of vessels in international trade do not need to be fitted with a radiotelephone station?
Cargo ships below 300 tons gross
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111. Which of the following reasons why an Automatic amplifier regulation is used ?
with varying incoming signals the variation in the out going signal is as small as possible
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112. In order to comply with GMDSS regulations, what is the minimum number of portable two way VHF walkie talkies to use in survival craft that should be carried onboard vessels?
3 sets
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113. Which of the following requirements regarding radio telephone stations do not correspond to present regulations?
While at sea the installation shall be maintained in a satisfactory condition
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114. The wavelength of a radio-signal reflected against the F-layer may be ?
1.5 m
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115. The secondary purpose of a radio installation onboard is ____.
To take part in public traffic
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116. You see an iceberg that has not been reported. What kind of radio message do you transmit to warn others?
Safety message
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117. The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called?
NAVTEX
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118. Where should the GMDSS radio log be kept on board ship?
At the GMDSS operating position
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119. Announcement and conversations from one station to another on board should be as brief as possible and consistent with _____.
Intelligibility
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120. What should you do FIRST to correct a condition wherein a diesel engine is operating with excessively high exhaust temperature on all cylinders ?
Reduce the engine load
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121. The VHF radiotelephone calling/safety/distress frequency is ?
156.8 MHz (channel 16)
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122. When an engineer on duty is inspecting an UMS-mode operated engine room at night what precaution should be taken?
switch on the dead man alarm upon entering the control room
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123. Which one on the list is required before a mariphone is installed on board ?
a license must be issued
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124. Which of the following VHF marine frequencies have been set aside by the ITU for Digital Selective Calling frequency?
70
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125. What is the content of table #3 of radiotelephony procedures?
Nature of distress in code from the International code of signals
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126. Which one of the following report if an incident takes place involving the discharge or probable discharge of oil ?(Annex I of MARPOL 73/78).
harmful substances report
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127. What is the best example of a wire to be used for the connection between VHF and antenna ?
a copper wire of sufficient diameter to minimize loses
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128. One wishes to have a telephone conversation with a person whose name is known. This is what we called a ?
a personal call
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129. You are making ship-to-shore telephone calls on VHF. You should use the ?
VHF-FM service
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130. Where does a radio signals in the HF channels propagate mainly ?
through hops between the ionized layers and the earth
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131. What is meant by the degree of selectivity of a receiver ?
Ability to make weak stations audible
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132. Which of the following VHF marine frequencies have been set aside by the ITU for The international distress, safety and calling frequency?
16
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133. A radiotelegraph station shall be provided with ______.
direct access to the navigating bridge
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134. Which statement concerning locating signals in the GMDSS is false?
Locating signals are transmitted by survival craft VHF transceiver.
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135. At what temperature in degree Celsius will safety devices called fusible plug installed in air compressor or compressed air system melts in order to prevent explosion?
100
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137. When all preparations have been made to ensure that the main engine is operational prior to departure what will be the final test to be carried out ?
Blow indicator cocks test reversing of engine short firing kick
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138. The main purpose of a radio transmitting installation onboard
to enhance the safety of lives at sea
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139. Which statement concerning satellite EPIRBs is true?
Once activated, these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon
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140. Underway on watch in the fireroom, the bridge reports white smoke coming from the stack. This would indicate ?
excessive excess air
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141. Which one on the list can mainly restricted the VHF transmission range?
The curvature of the surface of the earth
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142. What is the content of table #1 of radiotelephony procedures?
Phonetic alphabets and figure spelling
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143. The transmitting power of the mariphone is adjusted by setting?
squelch
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144. What is the most effective way of detecting any malfunction of machinery during their operation?
Electric siren
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145. Which of the listed requirements regarding two-way radiotelephone apparatus for survival crafts do not correspond to present regulations?
The apparatus shall be capable of being operated on VHF channel 16
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146. Automatic amplifier regulation is used to ?
reduce distortion of weak incoming signals
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147. What does a Modulation meant ?
to enhance the side bands in relation to the carrier wave
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148. Which radio frequency/channels are reserved for emergency communication?
2182 kHZ/HF channel 16
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149. One wishes to have a telephone conversation with a person whose name is known. What type of call it is ?
a personal call
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150. When onboard channel 16 is used for a shore radio-connection, you always work?
simplex
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151. In making VHF communication or test transmission you must ?
with DSC use, first broadcast the carrier wave for at least three seconds
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152. Can you recall on the list why an Acoustic feedback can arise ?
because the volume adjustment of the speaker is too high
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153. The type-indication of the radio set is mentioned in ?
the equipment appendix
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154. Which of the listed requirements regarding radiotelegraph installations do not correspond to present regulations?
The installation shall include equipment for radiotelephone communication on distress frequencies in addition to working frequencies
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155. Which of the following is the full name of abbreviation VDR?
voyage data recorder
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156. Vessel with an EPIRB, you must check ?
the working of the charger and check the loaded condition of the battery
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157. Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?
L-Band EPIRBs
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158. With the use of INMARSAT and digital selective calling, distress alerts can be received ?
With the NAVTEX