1.1 The methods described in this annex should be applied to
semi-standardized and non-standardized cargo including very heavy and/or very large
cargo items. Standardized stowage and securing systems, in particular containers on
containerships, are excluded.
1.2 Cargoes carried on towed barges should be secured according to the
provisions of this annex except that the assumed external forces may be determined using
an alternative method acceptable to the Administration instead of that described in
section
7.1 of this annex.
1.3 Very heavy and/or very large cargo items as addressed in chapter 1.8 of
this Code may require provisions and considerations beyond the general scope of this
annex. Examples of such provisions and considerations are given in appendix 3 of this
annex.
1.4 Semi-standardized cargoes, for which the securing arrangements are often
designed based on worst case assumptions on cargo properties, lashing angles and stowage
positions on board, may require provisions and considerations beyond the general scope
of this annex. Examples of such provisions and considerations are given in appendix 4 of
this annex.
1.5 Notwithstanding the general principles contained in this annex, the
adequacy of cargo securing may be demonstrated by means of detailed engineering
calculations based upon the general principles and encompassing the additional
provisions and considerations shown in appendix 3 of
this annex. Computer programs used for that purpose should be validated against a
suitable range of model tests or full-scale results in irregular seas. When using new
software for new and unconventional applications, the validation should be documented.
1.6 The application of the methods described in this annex is supplementary
to the principles of good seamanship and should not replace experience in stowage and
securing practice.