<abstract xmlns="http://www.w3.org/1999/xhtml">
<p>It is critical to estimate the workforce requirements for the production of blocks in shipbuilding. In this study, the number of workforce (man-day) required for the production of a passenger ship’s double bottom block was estimated. Initially, the production of the block was observed, and the average working performance of the mounting, welding, and grinding workers was recorded. Block drawings were examined and the work required was calculated. The amount of work increased, depending on any revisions required due to incorrect or incomplete designs. The average working performance of an employee is uncertain due to environmental factors, including the weather and working conditions, as well as health (both physical and mental). A two-stage stochastic programming model with recourse was established to estimate man-day required and a Sample Average Approximation (SAA) technique was used to obtain a near-optimum solution. The results of the study were compared with shipyard records and an agreement of approximately 90% was achieved.</p>
</abstract>

It is critical to estimate the workforce requirements for the production of blocks in shipbuilding. In this study, the number of workforce (man-day) required for the production of a passenger ship’s double bottom block was estimated. Initially, the production of the block was observed, and the average working performance of the mounting, welding, and grinding workers was recorded. Block drawings were examined and the work required was calculated. The amount of work increased, depending on any revisions required due to incorrect or incomplete designs. The average working performance of an employee is uncertain due to environmental factors, including the weather and working conditions, as well as health (both physical and mental). A two-stage stochastic programming model with recourse was established to estimate man-day required and a Sample Average Approximation (SAA) technique was used to obtain a near-optimum solution. The results of the study were compared with shipyard records and an agreement of approximately 90% was achieved.

Approximate Estimation of Man-Day in Ship Block Production: A Two-Stage Stochastic Program

Maritime Vocational School, Galatasaray University

Naval Architecture and Marine Engineering Department of Yildiz Technical University

Polish Maritime Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

It is critical to estimate the workforce requirements for the production of blocks in shipbuilding. In this study, the number of workforce (man-day) required...

Approximate Estimation of Man-Day in Ship Block Production: A Two-Stage Stochastic Program

Published Online: Mar 29, 2024

Page range: 146 - 158

DOI: https://doi.org/10.2478/pomr-2024-0015

Keywords
Shipbuilding, Block Production, Planning, Stochastic Modelling

© 2024 Yusuf Genç et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Approximate Estimation of Man-Day in Ship Block Production: A Two-Stage Stochastic Program

Published Online: Mar 29, 2024

Page range: 146 - 158

DOI: https://doi.org/10.2478/pomr-2024-0015

KeywordsShipbuilding, Block Production, Planning, Stochastic Modelling

© 2024 Yusuf Genç et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Shipbuilding, Block Production, Planning, Stochastic Modelling