|
|
Estimating Impairment
This table gives a guide to average impacts
of alcohol consumption. However, many factors, including prescription
medications and fatigue, can affect an individual's response
to alcohol, and impairment can occur much more quickly as
a result. There is NO safe threshold for drinking and operating
a boat, so do not assume you are safe just because you fall
into the "rarely" or "possibly" influenced
categories.
| APPROXIMATE
BLOOD ALCOHOL PERCENTAGE |
| |
100 |
120 |
140 |
160 |
180 |
200 |
220 |
240 |
|
| 1 |
0.04 |
0.04 |
0.03 |
0.03 |
0.02 |
0.02 |
0.02 |
0.02 |
RARELY |
| 2 |
0.09* |
0.07* |
0.06* |
0.06* |
0.05* |
0.04 |
0.04 |
0.04 |
|
| 3 |
0.13 |
0.11 |
0.09* |
0.08* |
0.07* |
0.07* |
0.06* |
0.06* |
|
| 4 |
0.18 |
0.15 |
0.13 |
0.11 |
0.1 |
0.09* |
0.08* |
0.07* |
POSSIBLY* |
| 5 |
0.22 |
0.18 |
0.16 |
0.14 |
0.12 |
0.11 |
0.1 |
0.09* |
|
| 6 |
0.26 |
0.22 |
0.19 |
0.17 |
0.15 |
0.13 |
0.12 |
0.11 |
|
| 7 |
0.31 |
0.26 |
0.22 |
0.19 |
0.17 |
0.15 |
0.14 |
0.13 |
DEFINITELY |
| 8 |
0.35 |
0.29 |
0.25 |
0.22 |
0.2 |
0.18 |
0.16 |
0.15 |
|
| 9 |
0.4 |
0.33 |
0.28 |
0.25 |
0.22 |
0.2 |
0.18 |
0.17 |
|
| 10 |
0.44 |
0.37 |
0.31 |
0.28 |
0.24 |
0.22 |
0.2 |
0.18 |
|
The asterisk ( * ) indicates estimated levels of impairment that
could mean the individual is possibly influenced.
|
|
|
