Section 2 Minimum thickness requirements
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Special Service Craft, July 2022 - Part 8 Hull Construction in Composite - Chapter 4 Scantling Determination for Multi-Hull Craft - Section 2 Minimum thickness requirements

Section 2 Minimum thickness requirements

Parent topic: Chapter 4 Scantling Determination for Multi-Hull Craft

2.1 General

2.1.1 The minimum thickness requirements for single skin laminates are to be in accordance with Pt 8, Ch 3, 2 Minimum thickness requirements.

2.1.2 The minimum amount of reinforcement in single skin laminates which form the skins of sandwich laminate is to be in accordance with Pt 8, Ch 3, 2 Minimum thickness requirements. In addition, the minimum amount of reinforcement requirements of Table 4.2.1 Minimum amount of reinforcement in sandwich laminate skins are to be complied with. The amount of reinforcement is to be corrected for craft type, craft length and fibre content in accordance with Pt 8, Ch 3, 2.5 Minimum skin reinforcement in sandwich laminates.

Table 4.2.1 Minimum amount of reinforcement in sandwich laminate skins

Panel location Minimum amount of reinforcement, W min (g/m2) Sandwich skin length factor, f LS
Glass Carbon/Aramid
Bottom outboard, outer skin 3650 2700 0,33
Bottom outboard, inner skin 2850 2100 0,33
Side outboard, outer skin 3250 2400 0,33
Side outboard, inner skin 2450 1950 0,33
Wet-deck, outer skin 3250 2400 0,33
Wet-deck, inner skin 2450 1950 0,33
Cross-deck, outer skin 2450 1950 0,33
Cross-deck, inner skin 1650 1300 0,0

Note The minimum amount of reinforcement in hybrid laminates will be individually considered on an equivalence basis. See Pt 8, Ch 3, 2.9 Sheathing 2.9.2.

2.1.3 In addition, where laminates contribute to the global strength of the craft, the thickness is to be not less than that required to satisfy global strength requirements.

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