1.1 The provisions of this annex apply to a portable
tank, which in the context of this annex, means a tank which is not
permanently secured on board the vessel and has a capacity of more
than 450 l and a shell fitted with external stabilizing
members and items of service equipment and structural equipment necessary
for the transport of liquids, solids or gases.
1.2 These provisions do not apply to tanks intended
for the transport of liquids, solids or gases having a capacity of
450 l or less.