Section 6 Inner bottom
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 5 Environmental Loads - Chapter 5 Local Design Loads - Section 6 Inner bottom

Section 6 Inner bottom

Parent topic: Chapter 5 Local Design Loads

6.1 Pressure on inner bottom

6.1.1 If the Complementary Rules are the Rules for Naval Ships then the design pressure on the inner bottom is not to be less than the following:

where
P hys = is defined in Vol 1, Pt 5, Ch 5, 2.2 Hydrostatic pressure 2.2.1
P hyd = is defined in Vol 1, Pt 5, Ch 5, 2.3 Hydrodynamic wave pressure 2.3.1
= For calculation of P hys and P hyd; T x, z and z k are to be taken at an appropriate damaged waterline.

6.1.2 If the Complementary Rules are the Rules for Special Service Craft then the design pressure, P des, is not to be less than that given in Pt 6, Ch 4, 6 Double bottom structure of the Rules for Special Service Craft.

6.1.3 If the Complementary Rules are the Rules for Ships, then the local pressures are not explicitly calculated. Local scantlings for the inner bottom are to be calculated according to Vol 1, Pt 6, Ch 4, 6 Inner bottom of the Trimaran Rules.

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