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Estimation of weight in early ship design stages relies on parametric models using data from similar vessels. Key independent variables correlated with weights and their centers are essential for accurate assessments. Three primary ship classification systems are identified: MARAD, SWBS, and SFI, which assist in weight estimation, cost analysis, and material procurement.

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Hussien El-masry
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9 views1 page

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Estimation of weight in early ship design stages relies on parametric models using data from similar vessels. Key independent variables correlated with weights and their centers are essential for accurate assessments. Three primary ship classification systems are identified: MARAD, SWBS, and SFI, which assist in weight estimation, cost analysis, and material procurement.

Uploaded by

Hussien El-masry
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Estimation of weight at early design stages requires the use of parametric models based on information

of similar vessels either from literature or using a shipyard’s database. An important part of this
estimation is to decide on the relevant independent variables that are correlated with weights and their
centers Ship systems and their components provide detailed technical information needed for weight
assessment, price estimation and production planning. Ship classification systems have been developed
to provide to the yards and to the companies involved in the management and operation of ships tools
to support ship specifications, estimates of light ship weight, ship building (or repair) costs and
systematically sort listed information on the procurement of materials, equipment and services. In brief,
there are three basic ship classification systems namely : (a) MARAD (MARitime Administration) used
by the U.S.A. administration; (b) SWBS- Ship Work Breakdown Structure, used by the USA Navy and
(c) .SFI– developed by the Norge Skips Forsknings Institutt (NSFI) of Norway, and is now property of
XANTIC ().

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