DNV Sea Pressure Load Calculator

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Description

“Introduction:
This application provides rule-based calculations for sea pressure loads based on DNV GL RULES FOR CLASSIFICATION – SHIPS, PART 3, CHAPTER 4, SECTION 5 to be used for strength assessment. Subsections covered are 1.1, 1.2, 1.3 and 2.2

References are taken from other chapters/sections as required.”

How to use
The user needs to provide inputs on each sheet in the cells as defined by the legend. Various sections have multiple-choice inputs required from the user. Make sure the choices are correct as the values are linked to other sections further in the sheet.
Green sea loads are also calculated based on the rules. Some if the inputs required can be calculated using the Sea Pressure sheet
The definitions sheet includes some of the definitions. Please refer to the rules for a detialed definition of the parameters
“Sign convention for ship motions
The ship motions are defined with respect to the ship’s centre of gravity (COG) as shown in Figure, where:
— positive surge is translation in the X-axis direction (positive forward)
— positive sway is translation in the Y-axis direction (positive towards port side of ship)
— positive heave is translation in the Z-axis direction (positive upwards)
— positive roll motion is positive rotation about a longitudinal axis through the COG (starboard down and
port up)
— positive pitch motion is positive rotation about a transverse axis through the COG (bow down and stern
up)
— positive yaw motion is positive rotation about a vertical axis through the COG (bow moving to port and
stern to starboard).”

References
DNV GL RULES FOR CLASSIFICATION – SHIPS, PART 3, CHAPTER 4, SECTION 5

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