1.5.1 Where the Guidelines require that a particular
fitting, material, appliance, apparatus, item of equipment or type
thereof should be fitted or carried out in a vessel, or that any particular
provision should be made, or any procedure or arrangement should be
complied with, the Administration may allow other fitting, material,
appliance, apparatus, item of equipment or type thereof to be fitted
or carried, or any other provision, procedure or arrangement to be
made in that vessel, if it is satisfied by trial thereof or otherwise
that such fitting, material, appliance, apparatus, item of equipment
or type thereof or that any particular provision, procedure or arrangement
is at least as effective as that required by the Guidelines.
1.5.2 When an Administration so allows any fitting,
material, appliance, apparatus, item of equipment or type thereof,
or provision, procedure arrangement, novel design or application to
be substituted, it should communicate to the Organization the particulars
thereof, together with a report on the evidence submitted, so that
the Organization may circulate the same to other Governments for information
of their officers.