8.1 A collision to grounding ratio of 40%:60%
is assumed for the purposes of combining the side and bottom damage
outflow values into a single overall mean outflow. This is consistent
with the assumption in the Revised Interim Guidelines. The mean outflow
parameter OM
is calculated by dividing the
combined side and bottom damage mean outflow by the total cargo volume C. For the purposes of this regulation as well as the Revised
Interim Guidelines, 98% filling is assumed for all oil tanks within
the cargo block length.