1 Subparagraphs .1, .2 and .3 define access to
under-deck structure, access to the uppermost sections of transverse
webs and connection between these structures.
2 Subparagraphs .4, .5 and .6 define access to
vertical structures only and are linked to the presence of transverse
webs on longitudinal bulkheads.
3 If there are no under-deck structures (deck
longitudinals and deck transverses) but there are vertical structures
in the cargo tank supporting transverse and longitudinal bulkheads,
access in accordance with subparagraphs from .1 through to .6 should
be provided for inspection of the upper parts of vertical structure
on transverse and longitudinal bulkheads.
4 If there is no structure in the cargo tank,
section 1.1 of table 1 should not be applied.
5 Section 1 of table 1 should also be applied
to void spaces in the cargo area, comparable in volume to spaces covered
by regulation II-1/3-6, except
those spaces covered by section 2.
6 The vertical distance below the overhead structure
should be measured from the underside of the main deck plating to
the top of the platform of the means of access at a given location.
7 The height of the tank should be measured at
each tank. For a tank the height of which varies at different bays,
item 1.1 should be applied to such bays of a tank that have a height
of 6 m and over.