what you should know a y l j performancesailingleadership.org/wp-content/uploads/2018/02/... ·...
TRANSCRIPT
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WHAT YOU SHOULD KNOW ABOUT YOUR LIFE JACKET
PERFORMANCE!
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Life Jacket Performance Study
Conducted by
C. Thomas Clagett, Jr. Memorial Clinic & Regatta
Partnering Organizations
American Canoe Association, USRowing, US Sailing
Funded by
Bonnell Cove Foundation
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Purpose of Study
• Test & Evaluate Life Jackets
• Identify Desirable Performance Factors
• Share Findings with Manufacturers
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Pool & Open Water Testing
3 Test Venues
104 Tests in Pool
92 Tests in Open Water
29 Life Jackets
15 Testers 13 Adaptive
2 Able-bodied
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Performance Factors
Performance
Fit &
Comfort Flotation
Level
Static Stability
Dynamic Stability
Face- Down
Rotation
Feeling Safe
Visibility in Water
Life Jacket
Lift
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Fit & Comfort • Fit
o Importance of fit ride-up o 23% difficulty tightening straps for
good fit o 3% could not get straps tight
enough for good fit
• Ride-Up o Discomfort
o Neck chafing, choking, back of head ride-up
o Flotation level impacted o Contributing factors
o Pear-shape, fit, straps , leg/crotch straps
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Ride-Up Data: Life Jackets
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
% o
f Y
es
Re
spo
nse
s
Type I Type II Type III Inflatable Belt Pack 50 N
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Ride-Up Data: Testers
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
CM (7) CR (19) SS (13) TS (23) CW (23) SL (6) SM (4) MD (14) AA (10) WE (13) KH (13) RH (7) BK (16) LS (12) RT (15)
% o
f Y
es
Re
spo
nse
s
Female Male
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Flotation Level Performance Factors
oBuoyancy of life jacket 50N, 70N (USCG min), 120N
oRide-up
oMuscle mass vs. fat mass
oLife jacket design
50 N (11 lbs.) Vest
120N (26.3 lbs.) Vest Inflatable
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Flotation Level – Open Water 50 N (11 lbs.) Wave Action
EU Approved – Not USCG 70 N (15.5 lbs.) Wave Action
USCG Approved
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Flotation Level Comparison
At Chin 35%
At Shoulders
43%
1-3" Below Shoulders
22%
At Chin 5%
At Shoulders
38%
1-3" Below Shoulders
33%
4+“ Below Shoulders
24%
115 Newton (25 lbs.) Life Jacket USCG Approved
50 Newton (11 lbs.) Life Jacket EU Approved – Not USCG Approved
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Static “Survival” Stability
• Stability in Pool o85% face up or vertical
o14% face down
o 1% sideways
• Stability in Open Water o83% face up or vertical
o17% face down
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Dynamic Stability
• Stability in Pool o98% face up or vertical
o 2% face down
• Stability in Open Water o96% face up or vertical
o 4% face down
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Face-Down Rotation
Pool & Open Water o 5 % Unable to turn
o16 % Head turn
o65 % Head & arms
o 5 % Torso turn
o 9 % Life jacket turn
5 %
16 %
65 %
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Feeling Safe in Water
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
% o
f Y
es
Re
spo
nse
s
Type I Type II Type III Inflatable Vest Belt Pack 50 N
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Visibility in Water
• Poor Visibility o Low flotation
oBlack tops & straps
• Recommendations oBright colored tops &
straps
oBright hoods
oReflective, florescent strips
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Life Jacket Lift Shoulder strap
design
Quick PIW Retrieval Method
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To the Pool… Lets See How the Life Jackets Perform!
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Your Opinion Matters
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