doi: 10.52899/24141437_2026_01_85
UDK: 629.5.013.2

Method for Estimating the Mass and Coordinates of Centers of Gravity of Ship Systems and Associated Components Based on Schematic Diagrams

Карплюк А. О.
Article language:
Citation Link: Karpluk AO. Method for Estimating the Mass and Coordinates of Centers of Gravity of Ship Systems and Associated Components Based on Schematic Diagrams. Transactions of the Saint Petersburg State Marine Technical University. 2026;5(1):85–94. DOI: https://doi.org/10.52899/24141437_2026_01_85 EDN: EJGXCC

Annotation

BACKGROUND: In the design of modern large-tonnage ships, an important task is the development of methods that improve the accuracy and speed of estimating the ship’s lightship displacement. The large number of ship systems and their components included in the ship load complicates the mass calculation process under conditions of changes in the general arrangement caused by its formation at the early design stages. The proposed method is recommended for use in the development of shipbuilding CAD systems, particularly in the general arrangement structure, in order to ensure an immediate response to changes in the general arrangement layout and recalculation of the mass of ship system components, as well as in the development of databases for storing and analyzing compartment-related information. AIM: To substantiate the methodological foundations and the automation algorithm for estimating the mass of ship system routings and the coordinates of their centers of gravity based on schematic diagrams. METHODS: The method consists in selecting the most suitable routing path for pipeline systems within compartments and compiling a combination of spaces for each element of the system route. The route length and the coordinates of the center of gravity are calculated using the actual dimensions of the spaces, whereas the mass of the associated route components is calculated according to the route attributes on a per-unit-length basis. RESULTS: The proposed method makes it possible to calculate the mass load of ship systems without resorting to laborintensive development of a 3D model and enables numerical estimation of route length and the degree of equipment saturation in ship spaces. Conditions were formulated for calculating load distribution over twenty theoretical frame spaces for any homogeneous linear objects constituting the ship load. CONCLUSION: The study showed that the results of mass load calculation obtained using the proposed method are comparable in accuracy with the data of direct calculations based on a 3D model of a similar ship system. Keywords: ship systems; mass load; lightship mass; displacement estimation; general arrangement of ship spaces.

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