Section A: Crew Efficiency Factors, Risk Factors and Team Coordination

Mental and physical fatigue is among the ________________________________ during rough weather operations

greatest dangers

The primary symptoms of fatigue are

• Inability to focus or concentrate/narrowed attention span.

• Mental confusion or judgment error.

• Decreased coordination of motor skills and sensory ability (hearing, seeing).

• Increased irritability.

• Decreased performance.

• Decreased concern for safety.

Some preventive measures are:

• Adequate rest.

• Appropriate dress for weather conditions.

• Rotate crew duties.

• Provide food and refreshments suitable for conditions.

• Observe other crewmembers for signs of fatigue.

Some other environmental conditions that also promote fatigue are

Motion sickness.

• Glare from the sun.

• Wind and rough sea conditions.

• Rain or snow.

• Vibration (boat engine).

Motion sickness occurs when there is an imbalance between __________images and the portion of the

_________________which senses motion.

visual, middle ear

Reading chart work, or other tasks that require close attention, will _________________motion sickness.

aggravate

Anti-motion Sickness Medications, COMDTINST 6710.15 (series), restricts medication use. Specifically, it must not be

given under the following circumstances:

• Without medical supervision.

• Within 12 hours of alcohol consumption.

• To pregnant crewmembers.