1.2.1 The Guidelines are intended for use of both
Administrations and submitters when dealing with an approval request
for an alternative and/or equivalent design and serve to provide guidance
on a variety of aspects requiring consideration when applying such
a process. This includes the process in general, shortlists of required
documents and considerations hereto as well as assessments of necessary
qualifications to complete the process successfully.
1.2.2 These Guidelines are intended for application
when approving alternative and/or equivalency designs in general and
specifically according to the provisions given for alternative design
and arrangements in applicable statutory IMO instruments.
1.2.3 The Guidelines serve to outline the methodology
for the analysis and approval process for which the approval of an
alternative and/or equivalent design is sought.
1.2.4 When proposing an alternative design, one
should keep in mind that the substitution of design measures to reduce
risk with operational or procedural ones to claim equivalent safety
needs to be thoroughly examined. Normally, this should not be permitted,
and special care should be taken in order to confirm that design measures
take priority over operational or procedural measures.
1.2.5 For the application of these Guidelines
to be successful, all stakeholders, including the Administration or
its designated representative, owners, operators, designers and classification
societies, should be in continuous communication from the onset of
a specific proposal. Usually the approval of an alternative and/or
equivalent design requires significantly more time in calculation
and documentation than a standard design that complies with prescriptive
regulation. However, the potential benefits of this approach include
more options, cost-effective designs for unique applications and an
improved knowledge of safety critical elements and loss potential.