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• Include the entities: Mass Hull, Mass Decks and Mass Bulkheads as children of Light Ship Weight. All three are singular obligatory.
• Include the following parameters in entity Light Ship Weight: Mass, COGX, COGY, COGZ, MOMX, MOMY, and MOMZ.
• Connect the same relations as above from the Knowledge Browser to the pertaining parameters in entity Light Ship Weight.
• To show computed values set attribute @SHOW on QEntityData.

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Mass Hull

Create the following parameter in the Knowledge Browser.

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• Include the following parameters in entity Mass Hull: Mass, COGX, COGY, COGZ, MOMX, MOMY, MOMZ, Volume and Weight_volume_factor.
• Create the following relations in entity Mass Hull (here, 12 is the entity ID of Main Dimensions, change this for your case):

Mass = Weight_volume_factor*Volume

COGX = (ENTITY#(12).Lpp)*0.5 (assume the centre of gravity of the hull in X direction half of the ship length)

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• To show computed values set attribute @SHOW on QEntityData.
• Make parameter Volume in entity Mass  Mass Hull use local properties ("Instantiate") and remove @MODIFY because you do not want to allow modification here.
• Create the following relation in entity Mass Hull (here, 13 is the entity ID of Hydrostatics, change this for your case):

Volume = ENTITY#(13).Volume

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Mass Decks

Include Entity:

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