MMC Shipboard Safety & Emergency Procedures 5

Question 1

A vessel's emergency position-indicating radio beacon (EPIRB) transmits on which frequency?

Accepted Answer

406 MHz (and 121.5 MHz as a homing signal)

Answer

Modern Category I and II EPIRBs transmit a distress signal on 406 MHz detected by COSPAS-SARSAT satellites and a 121.5 MHz signal for local homing by rescuers.

Question 2

What is the MINIMUM number of persons required to lower a survival craft on a USCG-inspected vessel?

Accepted Answer

One trained crew member

Answer

Survival craft must be designed and tested so that a single person can lower them, ensuring they can be launched even if crew is reduced.

Question 3

Which NFPA hazard diamond color indicates health hazard?

Accepted Answer

Blue

Answer

In the NFPA 704 diamond, the blue quadrant (left) represents health hazard, red (top) is flammability, yellow (right) is instability/reactivity.

Question 4

What action should be taken if a crewmember discovers a fellow crew member showing signs of carbon monoxide (CO) poisoning in an enclosed space?

Accepted Answer

Call for help, ventilate the space, and do not enter without SCBA

Answer

Rescuers must not enter a potentially CO-contaminated space without SCBA; ventilate first and use proper breathing apparatus before attempting rescue.

Question 5

Under CFR Title 46, a vessel's Emergency Position Indicating Radio Beacon (EPIRB) must be tested:

Accepted Answer

Monthly using the self-test function

Answer

EPIRBs must be tested monthly using the built-in self-test function, which does not activate the actual distress transmission.

(MMC) Merchant Mariner Credential Practice Test

(MMC) Merchant Mariner Credential Practice Test

MMC Shipboard Safety & Emergency Procedures 5