3.1.1 Where
specified in the Rules the ship structure is to be assessed using
finite element modelling in accordance with the applicable ShipRight
SDA procedures. Where the relevant procedures have been applied whether
on a voluntary or mandatory basis the ShipRight notation SDA will
be assigned, see also
Pt 1, Ch 2, 2.3 Class notations (hull) 2.3.17. In general the mandatory application criteria
for implementation of one of the associated ShipRight SDA procedures
is as follows:
-
bulk carriers
and oil tankers without a CSR notation greater than 190
m in length;
-
ore carriers
equal to and greater than 150 m in length;
-
container ships with a beam greater than 32,26 m;
-
the primary structure
of LNG ships fitted by membrane cargo tanks;
-
the primary structure
of LNG ships fitted with independent Type B spherical cargo tanks;
-
the primary structure
of LPG ships fitted with Independent Type A cargo tanks;
-
passenger ships
where it is required to utilise the load carrying capability of the
superstructure for longitudinal strength; or where it is considered
that the superstructure will be subjected to a significant load from
flexure of the hull girder; or, where a limited number of transverse
bulkheads above the bulkhead deck are present to carry the racking
response;
-
general cargo ships greater than 100 m in length having a cargo hold
of length greater than 50 per cent of the length of the cargo hold area;
-
other ships of
abnormal hull form or where the type, size and structural configuration
demand; and
-
upon application of any of the following ShipRight notations: FDA,
FDA plus(), FDA ICE, FDA SPR and, WDA1 and WDA2, see
also
Pt 3, Ch 16, 4 Fatigue design assessment and Pt 3, Ch 16, 5 Whipping design assessment.
In addition to the above, and where applicable, the structural
capability to withstand dynamic loadings from partially filled tanks
or the influence of thermal loadings may also be required to be assessed.