GMDSS EPIRB and SART Operations 1

Question 1

On which frequencies does a 406 MHz EPIRB transmit?

Accepted Answer

406 MHz and 121.5 MHz

Answer

A 406 MHz EPIRB transmits on 406 MHz for COSPAS-SARSAT satellite detection and on 121.5 MHz as a homing signal for rescue aircraft and vessels.

Question 2

What is the minimum operating duration required for a 406 MHz EPIRB after activation?

Accepted Answer

48 hours

Answer

SOLAS requires a 406 MHz EPIRB to operate for a minimum of 48 hours after activation to ensure adequate time for rescue operations.

Question 3

What is the primary purpose of the 121.5 MHz signal transmitted by a 406 MHz EPIRB?

Accepted Answer

To provide homing guidance for search and rescue units

Answer

The 121.5 MHz signal serves as a homing signal, allowing rescue aircraft and vessels to home in precisely on the EPIRB's location once in the general area.

Question 4

A Category I EPIRB is designed to:

Accepted Answer

Float free and activate automatically when the vessel sinks

Answer

A Category I EPIRB is mounted in a float-free bracket with a hydrostatic release unit that automatically releases and activates the beacon when submerged to 1–4 meters depth.

Question 5

Where must a 406 MHz EPIRB be registered?

Accepted Answer

With the vessel's flag state administration or its designated authority

Answer

EPIRBs must be registered with the flag state administration or its designated national authority so that the 15-digit identification code is linked to the vessel and owner.

GMDSS - Global Maritime Distress and Safety System Practice Test

GMDSS - Global Maritime Distress and Safety System Practice Test

GMDSS EPIRB and SART Operations 1