2.1.1 Before
the work is commenced, plans in triplicate of all machinery items,
as detailed in the Chapters giving the requirements for individual
systems, are to be submitted for consideration. The particulars of
the machinery, including power ratings, grade(s) of fuel and design
calculations, where applicable, necessary to verify the design, are
also to be submitted. Any subsequent modifications are subject to
approval before being put into operation. It will not be necessary
for plans and particulars to be submitted for each ship, provided
the basis plans for the engine size and type have previously been
approved as meeting the requirements of these Rules. Any alterations
to basis design materials or manufacturing procedure are to be re-submitted
for consideration.