The stairway arrangement required by regulation II-2/28.1.5
for below bulkhead deck compartments of one main vertical zone can
be arranged by:
- one enclosed stairway which provides a continuous fire shelter
from the level of its origin to the embarkation deck in one watertight
compartment;
- each of the other compartments have an enclosed stairway which
provides a continuous fire shelter from the level of its origin to
the bulkhead deck; and
- the continuous fire shelter is also provided on the bulkhead deck
through a route protected as a category 2 space (horizontal stairway) see
figure 5 in the appendix).