Section 1 General
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Special Service Craft, July 2022 - Part 5 Design and Load Criteria - Chapter 3 Local Design Criteria for Craft Operating in Non-Displacement Mode - Section 1 General

Section 1 General

Parent topic: Chapter 3 Local Design Criteria for Craft Operating in Non-Displacement Mode

1.1 Application

1.1.1 The design criteria given in this Chapter are applicable to craft when operating in the non-displacement mode, see Pt 5, Ch 1, 1.1 General.

1.1.2 Planing and semi-planing craft are craft with Taylor's Quotient, Γ, as defined in Pt 5, Ch 2, 2.1 Parameters to be used for the determination of load and design criteria 2.1.17, greater than or equal to 3,0.

1.1.3 Light displacement craft are craft with displacement, Δ, in tonnes, less than or equal to 0,04(L R B)1,5, as defined in Pt 1, Ch 2, 2.2 Definitions 2.2.11.

1.1.4 The design criteria detailed in this Chapter are to be used in conjunction with the load criteria given in Pt 5, Ch 2 Local Design Loads together with the strength formulae given in Pt 6 Hull Construction in Steel, Pt 7 Hull Construction in Aluminium and Pt 8 Hull Construction in Composite to determine the scantlings of steel, aluminium alloy and composite craft respectively as defined in Pt 1 Regulations.

1.1.5 Alternative methods of establishing the design criteria will be specially considered, provided that they are based on established Codes or Standards acceptable to LR. In such cases, full details of the methods used are to be provided when plans are submitted for approval.

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