(1) Packages containing a harmful substance shall
be durably marked with the correct technical name (trade names alone
shall not be used) and, further, shall be durably marked or labelled
to indicate that the substance is a marine pollutant. Such identification
shall be supplemented where possible by any other means, for example,
by use of the relevant United Nations number.
(2) The method of marking the correct technical
name and of affixing labels on packages containing a harmful substance
shall be such that this information will still be identifiable on
packages surviving at least three months' immersion in the sea.
In considering suitable marking and labelling, account shall be
taken of the durability of the materials used and of the surface
of the package.
(3) Packages containing small quantities of harmful
substances may be exempted from the marking requirements.*