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Subelement A
General Information and System Overview.
Section 6
Maintenance Options:
Which of the following statements concerning maintenance requirements is false?
  • Compulsory vessels sailing in Sea Areas A1 and A2 must provide any one of the three maintenance options which are duplication of equipment, shore-based, or at-sea maintenance capability.
  • Compulsory vessels sailing in Sea Areas A3 and A4 must provide any two of the three maintenance options which are duplication of equipment, shore-based, or at-sea maintenance capability.
  • Equipment warranties do not satisfy GMDSS maintenance requirements.
  • Correct Answer
    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.
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Which of the following statements concerning GMDSS maintenance requirements is true?
  • Correct Answer
    The options are duplication of equipment, at-sea maintenance, and shore-based maintenance.
  • Compulsory vessels between 300-500 gross tons are required only to provide one maintenance option, while compulsory vessels larger than 500 gross tons and all passenger vessels are required to provide any two of the three maintenance options.
  • The "at-sea" maintenance may be waived if the compulsory vessel carries at least three licensed GMDSS Radio Operators.
  • Compulsory vessels operating in Sea Area A4 are required to carry at least one licensed GMDSS Radio Maintainer.
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Which of the following is a GMDSS requirement for all vessels over 300 gross tons operating within range of a MF-DSC equipped shore station?
  • Ship's Master or radio officer must be on watch at all times.
  • Correct Answer
    Only one of the three maintenance options is required.
  • MF communications must be handled by the holder of a General Radiotelephone Operator's License.
  • Only FCC required spare parts and a maintenance kit for repairs are required.
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What statement is correct regarding the maintenance requirements for A3 ships under GMDSS?
  • If the vessel selects at-sea maintenance no additional parts and spares are required.
  • On-board maintenance provided by a person holding a GMDSS Maintainer's license will fully meet the requirements.
  • Correct Answer
    Redundancy of functions of certain equipment and on-board maintenance provided by a person holding a GMDSS Maintainer's license will partially meet this requirement.
  • Shoreside maintenance and scheduled tests and inspections will not partially meet this requirement.
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A ship operating in sea area A-3 must have the following provisions for maintenance:
  • Duplication of Equipment.
  • Shore Maintenance.
  • Correct Answer
    Any two of these are required.
  • At Sea Maintenance.

47 CFR 80.1105
(d) On ships engaged on voyages in sea areas A3 and A4, the availability must be ensured by using a combination of at least two of the following methods: duplication of equipment, shore-based maintenance, or at-sea electronic maintenance capability.

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A ship operating in sea area A-1 must have the following provisions for maintenance:
  • Shore maintenance.
  • Duplication of equipment.
  • At Sea Maintenance.
  • Correct Answer
    Any one of these is sufficient.
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