Det Norske Veritas - Germanischer Lloyd

Environmental Conditions and Environmental Loads
 N DNV-RP-C205

Annotation

Scope and application

Environmental conditions

Environmental conditions cover natural phenomena, which may contribute to structural damage, operation disturbances or navigation failures. The most important phenomena for marine structures are:

— wind

— waves

— current

— tides.

These phenomena are covered in this RP.

Phenomena, which may be important in specific cases, but not covered by this RP include:

— ice

— earthquake

— soil conditions

— temperature

— fouling

— visibility.

The environmental phenomena are usually described by physical variables of statistical nature. The statistical description should reveal the extreme conditions as well as the long- and short-term variations. If a reliable simultaneous database exists, the environmental phenomena can be described by joint probabilities.

The environmental design data should be representative for the geographical areas where the structure will be situated, or where the operation will take place. For ships and other mobile units which operate worldwide, environmental data for particularly hostile areas, such as the North Atlantic Ocean, may be considered.