CMA Referent Sleep DIKW

After a long engine maintenance shift, Marino fell into a deep sleep and achieved physical recovery. What stage is his body likely in during this time?

• REM
• Stage 3
• Stage 1
• Stage 2

Melvin is working a night shift and struggles to sleep during the day despite exhaustion. What hormone is likely affected?

• Melatonin
• Adrenaline
• Cortisol
• Serotonin

A cadet uses blackout curtains and avoids screens before sleeping. Why is this effective?

• It lowers melatonin
• It encourages melatonin production
• It increases REM sleep instantly
• It reduces physical exhaustion

During sleep, a seafarer begins to dream and shows rapid eye movement. What benefit is this stage giving?

• Light awareness
• Body repair
• Physical awareness
• Emotional regulation

A captain receives raw weather and tries to know if its high low or average,every hour. According to DIKW, what does this represent?

• Wisdom
• Data
• Knowledge
• Information

The chief mate compares fuel reports from two voyages and changes engine settings for efficiency. What DIKW level?

• Knowledge
• Wisdom
• Information
• Data

A deck officer experiences fragmented sleep after alternating watch schedules. What advice is most appropriate?

• Avoid sleeping right after duty
• Drink energy drinks before sleeping
• Increase screen time before sleep
• Avoid caffeine and keep a sleep routine

Which part of DIK W. is achieved when we answer the question "WHY?

• Information
• Wisdom
• Data
• Knowledge

A cook sleeps lightly and wakes up easily with noise. What stage of sleep is this most likely?

• REM
• Stage 3
• Stage 2
• Stage 1

After a stressful conflict onboard, a crew member has disturbed dreams and wakes feeling unsettled. Which sleep stage is most affected?

• Stage 3
• Stage 1
• REM
• Stage 2