Reducing Detail Design and Construction Work Content by Cost-Effective Decisions in Early-Stage Naval Ship Design
The Office of the Under Secretary of Defense, Acquisition, Technology, and Logistics (AT&L) recently presented analyses of cost and schedule growth on Major Defense Acquisition Programs (MDAPs) over the last 20 years (2013, 2014). For naval ships, AT&L (2013) concluded that contract work content growth (not capability growth) dominates total cost growth statistically. In addition, costs-over-target are significant and reflect poor cost estimation or faulty framing assumptions. AT&L (2014) also concluded prices on fixed-price contracts are only “fixed” if the contractual work content remains fixed, but this is often not the case. The authors show that under-sizing the ship during concept design studies increases ship outfit density and adds complexities to the design. These early-stage design decisions on sizing the ship are a major contributor to unnecessary work content growth later in Detail Design and Construction (DD&C) that cannot be eliminated no matter how productive the shipbuilder. However, new ship design methods are being developed and integrated with legacy physics-based design and analysis tools into a Rapid Ship Design Environment (RSDE) that will enable a more rational process for initially sizing ships. The authors also identify the need for early-stage design measures of complexity and ship costing tools that are more sensitive to these measures, and propose solutions that will aid decision-makers in reducing DD&C work content by making cost-effective design decisions in early-stage naval ship design.
- Record URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/647915695
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Supplemental Notes:
- Abstract used with permission from the Society of Naval Architects and Marine Engineers (SNAME).
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Authors:
- Keane, Robert G
- Deschamps, Laurent
- Maguire, Steve
- Publication Date: 2016-5
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 110-123
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Serial:
- Journal of Ship Production and Design
- Volume: 32
- Issue Number: 2
- Publisher: Society of Naval Architects and Marine Engineers
- ISSN: 2158-2866
- EISSN: 2158-2874
- Serial URL: https://onepetro.org/jspd
Subject/Index Terms
- TRT Terms: Computer aided design; Cost effectiveness; Decision making; Military vessels; Shipbuilding; Vehicle design
- Subject Areas: Design; Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 01598373
- Record Type: Publication
- Files: TRIS
- Created Date: May 2 2016 10:15AM