The level of protection against oil pollution in the event
of collision or stranding as compared to the reference double-hull
designs should be determined by calculation of the pollution-prevention
index E as follows:
where:
|
= |
k
1, k
2 and k
3 are weighting factors having the values:
|
k
1
|
= |
0.5 |
k
2
|
= |
0.4 |
k
3
|
= |
0.1 |
P
O
|
= |
probability of zero oil outflow for the alternative design |
O
M
|
= |
mean oil outflow parameter for the alternative design |
O
E
|
= |
extreme oil outflow parameter for the alternative design |
P
OR, OMR and OER are
the corresponding parameters for the reference double-hull design
of the same cargo oil capacity as specified in section 7.