ISO 12215-5 (see Appendix 13 of this code) should be used
with caution where the vessels’ hull or superstructure is fabricated of
fibre reinforced plastic, or where the vessel is subject to impact
loading from contact with fixed structures such as offshore wind farm
turbine towers, or the vessel is a multihull, until such time that it is
updated with respect to commercial vessels. Where this standard is
applied to fibre reinforced plastic (FRP) vessels, Annex C FRP Laminate
Properties and Calculations should also be referred to. This Annex is
intended to support the ISO standard and is part of the scantling
requirements of that standard.