A wide longitudinal frame of at least 600 mm clear width
may be used for the purpose of the longitudinal continuous permanent
means of access. The foremost and aftermost bilge hopper ballast tanks
with raised bottom, of which the height is 6 m and over, a combination
of transverse and vertical MA for access to the sloping plate of hopper
tank connection with side shell plating for each transverse web can
be accepted in place of the longitudinal permanent means of access.