STCW Seafarer Safety & Emergency Procedures 5

Question 1

What is the minimum safe oxygen concentration level in a confined space before entry without breathing apparatus?

Accepted Answer

19.5%

Answer

An oxygen concentration below 19.5% is considered oxygen-deficient and unsafe for entry without self-contained breathing apparatus.

Question 2

Under SOLAS Chapter III, how long must a totally enclosed lifeboat be able to sustain its crew without resupply?

Accepted Answer

3 days

Answer

SOLAS requires totally enclosed lifeboats to carry sufficient food, water, and supplies to sustain the survival craft's complement for three days.

Question 3

What is the purpose of a 'dead man alarm' or bridge navigational watch alarm system (BNWAS)?

Accepted Answer

To detect officer incapacitation by requiring periodic acknowledgment, triggering an alarm if unresponsive

Answer

BNWAS requires the officer of the watch to periodically acknowledge the system; failure to do so triggers escalating alarms to alert back-up watchkeepers.

Question 4

Which of the following best describes the 'cold shock' response when a person enters very cold water?

Accepted Answer

Uncontrollable gasping and hyperventilation that can cause drowning within seconds

Answer

Cold shock triggers an involuntary gasp reflex and hyperventilation that can cause aspiration of water and rapid drowning in the first 1–3 minutes of cold water immersion.

Question 5

During an emergency, what is the responsibility of the crew member designated as 'Crowd Control' on the muster list?

Accepted Answer

To guide and calm passengers, prevent panic, and direct them to muster stations

Answer

Crowd control personnel direct passengers calmly and efficiently to muster stations, preventing panic and ensuring orderly movement.

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

STCW Seafarer Safety & Emergency Procedures 5