3.1.1 Certified shiplift and transfer systems are to be constructed of steel which complies with the requirements of Ch 1, 1.6 Materials and fabrication and Ch 11 Materials and Fabrication. Proposals to use materials other than steel will be specially considered. The fabrication is to be in compliance with Ch 11, 3 Fabrication of certified lifting appliances, as applicable
3.1.2 The requirements with respect to toughness criteria are the same as for classed installations, see Ch 5, 3.2 Materials for classed installations 3.2.3 and Ch 5, 3.2 Materials for classed installations 3.2.4 .
3.1.3 The required documentation for materials such as structural steel in the primary load path (including pins and wheels) used for the construction of certified shiplift and transfer systems is to be as defined in Ch 11, 4 Material documentation for certified and classed lifting appliances.
3.2.1 Classed shiplift and transfer systems are to be constructed of steel which complies with the requirements of Ch 1, 1.6 Materials and fabrication and Ch 11 Materials and Fabrication Proposals to use materials other than steel will be specially considered. The fabrication is to be in compliance with Ch 11, 2 Fabrication of classed lifting appliances.
3.2.2 The required documentation for materials such as structural steel in the primary load path (including pins and wheels) used for the construction of classed shiplift and transfer systems is to be as defined in Ch 11, 4 Material documentation for certified and classed lifting appliances.
3.2.3 The selected steel grade is to provide adequate assurance against brittle fracture and is to comply with Ch 11, 1.2 General material requirements 1.2.2.
The Charpy V-notch impact test requirements for minimum design temperatures above -10°C and below -40°C will be specially considered (see Ch 11, 1.2 General material requirements 1.2.4).
3.2.4 Alternative proposals in respect of the notch toughness characteristics of the materials will be considered when the service location of the particular installation is such that low temperatures are not climatically probable.