For the purpose of the application of this section of the
Guidelines:
-
.1 "clear gap" means a clear unobstructed passage
between hatchway covers that provides a path for dangerous goods to
enter the cargo hold;
-
.2 "effective gutterbar" means a gutterbar the
height of which is not less than 50 mm and also includes labyrinth
bar; and
-
.3 "sensitive vertical line" means a vertical
line under deck within one container space from a clear gap in athwartships
direction(s) as specified by "C" in figures 3.2.3-1 and 3.2.3-2 below or equivalent.
Figure 3.2.3-1 Illustration of vertical lines
Figure 3.2.3-2 Illustration of vertical lines
Note Vertical row positions "on-deck", not directly above clear
gaps between hatchway covers, are specified by "A". Vertical row positions
with less than 50% footing on the hatch, are specified by "B". Where
containers are placed in the outermost vertical row positions with
more than 50% footing on the hatch cover are deemed to qualify as
position(s) "A".