3.1 This chapter covers those elements of hull
and superstructure, which provide longitudinal and other primary and
local strength of the craft as a whole and also other important components
such as foils and skirts which are directly associated with the hull
and superstructure.
3.2 Materials used for the hull and superstructure
and the other features referred to in 3.1 should be adequate for the
intended use of the craft. Due regard should be paid to 7.2.1.
3.3 The structure should be capable of withstanding
the static and dynamic loads which can act on the craft under all
operating conditions, without such loading resulting in inadmissible
deformation and loss of watertightness or interfering with the safe
operation of the craft.
3.4 Cyclic loads, including those from vibrations
which can occur on the craft should not:
-
(a) impair the integrity of structure during the
anticipated service life of the craft or the service life agreed with
the Administration;
-
(b) hinder normal functioning of machinery and
equipment; and
-
(c) impair the ability of the crew to carry out
its duties.
3.5 The Administration should be satisfied that
the choice of design conditions, design loads and accepted safety
factors corresponds to the intended operating conditions for which
certification is sought.
3.6 If the Administration considers it necessary
it should require full scale trials to be undertaken in which loadings
are determined. Cognizance should be taken of the results where these
indicate that loading assumptions or structural calculations have
been inadequate.