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GAR MODEL
(GREEN-AMBER-RED)
Risk Calculation Worksheet
0 (No Risk) – 10 (Max Risk)

Supervisory Control considers the qualification and effectiveness of
the supervision.
• Even if a person is qualified to perform a task, supervision acts as a
control to minimize risk.
• This may simply be someone checking what is being done to ensure it is
being done correctly.
• The higher the risk, the more the supervisor needs to be focused on
observing and checking.
• A supervisor who is actively involved in a task (doing something) is
easily distracted and should not be considered an effective safety
observer in moderate to high-risk conditions.
SUPERVISION

Planning and preparation: should consider how much information
you have, how clear it is, and how much time you have to plan the
evolution or evaluate the situation.
Team selection: should consider the qualifications and experience
level of the individuals used for the specific event/evolution.
Individuals may need to be replaced during the vent/evolution and the
experience level of the new team members should be assessed.
PLANNING & TEAM SELECTION

Team fitness: should consider the physical and mental state
of the crew.
• This is a function of the amount and quality of rest a
crewmember has had.
• Quality of rest should consider how the ship rides, its
habitability, potential sleep length, and any interruptions.
• Fatigue normally becomes a factor after 18 hours without
rest; however, lack of quality sleep builds a deficit that
worsens the effects of fatigue.
TEAM FITNESS

Environment: should consider factors affecting personnel
performance as well as the performance of the asset or
resource.
• This includes, but is not limited to, time of day,
temperature, humidity, precipitation, wind and sea
conditions, proximity of aerial/navigational hazards and
other exposures (e.g., oxygen deficiency, toxic chemicals,
and/or injury from falls and sharp objects).
ENVIRONMENT

Event/Evolution complexity: should consider both the required time
and the situation.
• Generally, the longer one is exposed to a hazard, the greater the
risks. However, each circumstance is unique.
• For example, more repetitions of an evolution can increase the
opportunity for a loss to occur, but may have the positive effect of
improving the proficiency of the team, thus possibly decreasing the
chance of error. This would depend upon the experience level of the
team.
• The situation includes considering how long the environmental conditions
will remain stable and the complexity of the work.
EVENT or EVOLUTION COMPLEXITY

Assign a risk value of 0 (For No Risk) through 10 (For
Maximum Risk) to each of the six elements on the
GAR form.
• Continually reassess the risk values as you operate.
• Fill out a new form as major alterations occur.
RISK VALUE

Mission risk: visualized using the colors of a traffic light.
• If the total risk value falls in the GREEN ZONE (1-23), risk is rated as
low.
• If the total risk value falls in the AMBER ZONE (24-44), risk is
moderate and you should consider adopting procedures to minimize the
risk.
• If the total value falls in the RED ZONE (45-60), you should implement
measures to reduce the risk prior to starting the event or evolution.
The ability to assign numerical values or “color codes” to hazards using
the GAR Model is not the most important part of risk assessment.
What is critical to the assessment process is team discussions leading to
an understanding of the risks and how they will be managed.
MISSION RISK: GAR MODEL

Report the GAR score to Fire Alarm,
Incident Safety Officer and Incident
Command
PRIOR TO GETTING UNDERWAY

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