Section 4 Wet-deck
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules for the Classification of Trimarans, July 2022 - Volume 1 Regulations and Structural Arrangements - Part 6 Scantling Determination - Chapter 4 Local Scantling Requirements - Section 4 Wet-deck

Section 4 Wet-deck

Parent topic: Chapter 4 Local Scantling Requirements

4.1 General

4.1.1 This Section contains local scantling requirements applicable to the wet-deck. Each applicable sub-Section is to be evaluated to determine the governing scantling requirement as follows:

4.2 Requirements due to design pressures

4.2.1 The scantlings of plating and stiffeners on the wet-deck are to be determined from the general equations given in Vol 1, Pt 6, Ch 4, 2 Minimum structural requirements, using the design pressures calculated according to Vol 1, Pt 5, Ch 5, 4 Wet-deck.

4.3 Additional minimum requirements

4.3.1 The scantlings of plating and stiffeners are not to be less than those required for the main hull side shell, as in Vol 1, Pt 6, Ch 4, 3.3 Additional minimum requirements.

4.4 Slamming above the waterline

4.4.1 If the Complementary Rules are the Rules for Naval Ships then the scantlings of plating and stiffeners are not to be less than those given in Vol 1, Pt 6, Ch 3, 15 Strengthening for wave impact loads above waterline of the Rules for Naval Ships using the pressure, IP wi, calculated according to Vol 1, Pt 5, Ch 5, 4.3 Impact pressure. Note that for calculation of h s according to Vol 1, Pt 6, Ch 3, 15.2 Strengthening against bow flare wave impacts 15.2.2 of the Rules for Naval Ships, f DLF is to be taken as 1,0.

4.4.2 If the Complementary Rules are the Rules for Ships then the scantlings of plating and stiffeners are not to be less than those given in Pt 3, Ch 5, 1.6 Strengthening against bow flare slamming, Pt 4, Ch 2 Ferries, Roll On-Roll Off Ships and Passenger Ships and Pt 4, Ch 8 Container Ships of the Rules for Ships depending on the particular ship type, using the pressure, IP wi, calculated according to Vol 1, Pt 5, Ch 5, 2.5 Wave impact pressure above waterline.

4.4.3 If the Complementary Rules are the Rules for Special Service Craft then the scantlings of plating and stiffeners are not to be less than those given in Vol 1, Pt 6, Ch 4, 2 Minimum structural requirements using the pressure calculated according to Vol 1, Pt 5, Ch 5, 2.5 Wave impact pressure above waterline.

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