Section 3 Air environment
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 1 Ship Structures - Part 5 Environmental Loads - Chapter 2 Environmental Conditions - Section 3 Air environment

Section 3 Air environment

Parent topic: Chapter 2 Environmental Conditions

3.1 Wind speed

3.1.1 For design purposes a wind speed of 40 m/s is to be assumed.

3.2 Design air temperature

3.2.1 The design air temperature is to be taken as 2°C lower than the lowest mean daily average air temperature in the area of operation:

where
Mean = statistical mean over a minimum of 20 years (MDHT)
Average = average during one day and one night (MDAT)
Lowest = lowest during the year (MDLT).

Figure 2.3.1 Design air temperature shows the definition graphically.

Figure 2.3.1 Design air temperature
Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.