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Subelement A
General Information and System Overview.
Section 5
Carriage Requirements:
Which statement is true regarding a vessel equipped with GMDSS equipment that will remain in Sea Area A1 at all times?
  • Correct Answer
    The vessel must be provided with a radio installation capable of initiating the transmission of ship-to-shore Distress alerting from the position from which the ship is normally navigated.
  • VHF DSC alerting may be the sole means of Distress alerting.
  • HF or MF DSC may satisfy the equipment requirement.
  • HF SSB with 2182 kHz automatic alarm generator may satisfy the equipment requirement.
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What statement is true regarding the additional equipment carriage requirement imposed for the survival craft of vessels over 500 gross tons?
  • Additional carriage of two radio equipped lifeboats aft.
  • Correct Answer
    A second radar transponder is required.
  • Four additional portable VHF radios are required.
  • The ability to communicate in all modes with any shore station.
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Vessels operating in which sea area(s) are required to carry either Inmarsat or HF equipment or a combination thereof under GMDSS?
  • All sea areas
  • A4
  • Correct Answer
    A3
  • A1
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Within a single sea area, what is the primary reason GMDSS imposes carriage requirements for different radio subsystems?
  • Redundancy in duplicating all operational functions in the event of a system failure.
  • Different subsystems are required to meet the specific equipment carriage requirements of national authorities.
  • GMDSS vessels must be equipped to communicate in all modes with coast radio stations.
  • Correct Answer
    The combined capabilities of redundant subsystems mitigate the risk of a single point of failure.
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If operating within Ocean Area A1, and outside of NAVTEX coverage, a GMDSS-equipped vessel must carry:
  • Correct Answer
    Equipment capable of reception of Maritime Safety Information by the Inmarsat enhanced group call system, or HF SITOR (NBDP).
  • A GPS receiver.
  • Equipment capable of maintaining a continuous DSC watch on 2187.5 kHz.
  • An Inmarsat-B terminal.
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What is the equipment carriage requirement for survival craft under GMDSS?
  • At least three SCT units and two SARTs on every cargo ship between 300-500 gross tons and the same on all passenger ships regardless of tonnage.
  • Correct Answer
    At least three SCT units and two SARTs on every passenger ship and cargo ships of 500 gross tons and upwards.
  • At least two radar transponders must be carried on every cargo ship of 300-500 gross tons and two radar transponders (one for each side) of every passenger ship regardless of tonnage.
  • All cargo vessels above 300 gross tons and every passenger ship regardless of tonnage must carry three SCT units and two SARTs.
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