15 Exceeding the permissible limits specified
in the ship's approved loading manual will lead to over-stressing
of the ship's structure and may result in catastrophic failure of
the hull structure.
16 It is important to be aware that over-stressing
of local structural members can occur even when the hull girder still
water shear forces and bending moments are within their permissible
limits. In this regard particular attention should be given to double
bottom loading utilizing local loading diagrams in the loading manual.
17 If time for ensuring the cargo in each hold
is trimmed (evenly distributed) is not included in the loading plan
there is an increased risk of asymmetric loading. Asymmetric loading
in the fore-aft direction can increase the lateral cargo pressure
acting on the transverse bulkhead and increase the loads carried by
the transverse bulkhead structure and the magnitude of transverse
compressive stresses in the cross deck. Transverse asymmetric loading
will introduce torsional loads leading to warping of the hull section
giving rise to shearing and bending of the cross deck structure.
18 For more guidance please refer to IACS Recommendation
No.46 Guidance and Information on Bulk Cargo Loading and Discharging
to Reduce the Likelihood of Over-stressing the Hull Structure.