GMDSS. General. Test 19

GMDSS: How can you avoid a false alert when cleaning certain types of Cospas/Sarsat EPIRBs with soap-water ?

The heaviest part must always point downwards
The heaviest part must always point upwards and you must avoid touching the sea water contacts.
The heaviest part must always point upwards
The heaviest part must be submerged into a bucket of water

GMDSS: What is the purpose of the mercury switch inside some types of Cospas/Sarsat EPIRBs?

To connect the battery to the transmitter
To avoid overload in the transmitter when the EPIRB is activated
To disconnect the battery from the transmitter when taken out of the water
To connect the antenna to the transmitter when the EPIRB is afloat in the sea

GMDSS: Why is the radiation from a transmitting antenna weaker if the insulators are covered with soot and salt?

Because soot and salt would lead the antenna current to ground.
Because soot and salt will act as an insulating material, and the radio waves will be 'trapped'.
Because soot and salt are not good conductors
Because soot and salt will react chemically with the copper wire, resulting in oxidation and deterioration of the antenna.

GMDSS: How can you decide when the hydrostatic release mechanism on an EPIRB is to be replaced?

Replace the releaser according to date markings
Replace the releaser when owners tell us to do so
Check for wear and tear on the releaser; if worn out, replace it
It must be replaced every 5 years

GMDSS: The Cospas/Sarsat EPIRB has global coverage. How is this possible?

Because this EPIRB utilises satellites that are geostationary
Because this EPIRB utilises satellites in equatorial orbits
Because this EPIRB utilises satellites in low polar orbits
Because this EPIRB utilises Inmarsat satellites

GMDSS: Your vessel is equipped for sea area A1 + A2. Suddenly there is an explosion in the engine room. What equipment should be used to transmit the distress alert?

MF DSC and EPIRB
VHF and MF DSC, Inmarsat-C, EPIRB and SART
VHF and MF DSC, EPIRB and SART
VHF Digital Selective Calling (DSC) and EPIRB

Review Answers

GMDSS. General. Test 19

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