SHIP PRODUCTION COMMITTEEFACILITIES AND ENVIRONMENTAL EFFECTSSURFACE PREPARATION AND COATINGSDESIGN/PRODUCTION INTEGRATIONHUMAN RESOURCE INNOVATIONMARINE INDUSTRY STANDARDSWELDINGINDUSTRIAL ENGINEERINGEDUCATION AND TRAINING

THE NATIONALSHIPBUILDINGRESEARCHPROGRAM

November 15, 2000NSRP 0566

N6-96-1

Ship Designer's Handbook

U.S. DEPARTMENT OF THE NAVYCARDEROCK DIVISION,NAVAL SURFACE WARFARE CENTER

in cooperation with

Newport News Shipbuilding

Report Documentation Page Form ApprovedOMB No. 0704-0188

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering andmaintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information,including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, ArlingtonVA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if itdoes not display a currently valid OMB control number.

1. REPORT DATE 15 NOV 2000

2. REPORT TYPE N/A

3. DATES COVERED -

4. TITLE AND SUBTITLE The National Shipbuilding Research Program, Ship Designer’s Handbook

5a. CONTRACT NUMBER

5b. GRANT NUMBER

5c. PROGRAM ELEMENT NUMBER

6. AUTHOR(S) 5d. PROJECT NUMBER

5e. TASK NUMBER

5f. WORK UNIT NUMBER

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Naval Surface Warfare Center CD Code 2230-Design Integration ToolsBldg 192, Room 128 9500 MacArthur Blvd Bethesda, MD 20817-5700

8. PERFORMING ORGANIZATIONREPORT NUMBER

9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR’S ACRONYM(S)

11. SPONSOR/MONITOR’S REPORT NUMBER(S)

12. DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release, distribution unlimited

13. SUPPLEMENTARY NOTES

14. ABSTRACT

15. SUBJECT TERMS

16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT

SAR

18. NUMBEROF PAGES

126

19a. NAME OFRESPONSIBLE PERSON

a. REPORT unclassified

b. ABSTRACT unclassified

c. THIS PAGE unclassified

Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18

DISCLAIMER

These reports were prepared as an account of government-sponsored work. Neither theUnited States, nor the United States Navy, nor any person acting on behalf of the UnitedStates Navy (A) makes any warranty or representation, expressed or implied, with respectto the accuracy, completeness or usefulness of the information contained in this report/manual, or that the use of any information, apparatus, method, or process disclosed in thisreport may not infringe privately owned rights; or (B) assumes any liabilities with respect tothe use of or for damages resulting from the use of any information, apparatus, method, orprocess disclosed in the report. As used in the above, “Persons acting on behalf of theUnited States Navy” includes any employee, contractor, or subcontractor to the contractorof the United States Navy to the extent that such employee, contractor, or subcontractor tothe contractor prepares, handles, or distributes, or provides access to any informationpursuant to his employment or contract or subcontract to the contractor with the UnitedStates Navy. ANY POSSIBLE IMPLIED WARRANTIES OF MERCHANTABILITY AND/ORFITNESS FOR PURPOSE ARE SPECIFICALLY DISCLAIMED.

SHIP DESIGNERS HANDBOOK

FOR

NATIONAL SHIPBUILDING RESEARCH PROGRAM

Product Design and Materials Technologies Panel

Produced by:

BATH IRON WORKS

ADVANCED TECHNOLOGY DEPARTMENT

BRANDON T. McGRATHROBERT McGOWAN

ERIC SCHUYLERRUSS HOFFMAN

Submitted:November 1, 2000

NSRP Project No. 6-96-1

Bath Iron WorksA GENERAL DYNAMICS COMPANY

NSRP #6-96-1 11/01/00

Bath Iron Works – A General Dynamics Company 1

EXECUTIVE SUMMARY

Becoming more competitive in the international shipbuilding marketplace is a highpriority goal for the U.S. shipbuilding industry. Achieving this objective requires in-depthknowledge of both foreign and domestic design practices, shipbuilding rules, andshipping regulations.

Most American ship designers are familiar with the American Bureau of Shipping (ABS)construction rules. ABS is part of the community of major international classificationsocieties, including Lloyd’s Register (LR), Det Norske Veritas (DNV), Nippon Kaiji Kyokai(NK), and Germanischer Lloyd (GL). To gain and maintain an internationally competitiveposition, U.S. shipbuilders must be capable of understanding and applying therequirements of this diverse group of classification societies.

This project provides a database that will help American ship designers distinguish thesimilarities and differences between ABS’s requirements and those of otherinternationally prominent societies. To do this in the most effective and efficient manner,the problem was approached from both a qualitative and a quantitative direction.

The qualitative treatment is a U.S. Navy Ship Work Breakdown Structure (SWBS)-basedindex of ship construction rules for four classification societies (ABS, LR, DNV, and NK).SWBS Groups 100 through 600 were included. This information is presented in aconcise manner by the Microsoft Excel spreadsheet titled, “Qualitative SWBS AnalysisDatabase” that accompanies this report and includes a “significant differences” field withother important observations made during rule assessment.

In the course of compiling this information, it became apparent that few instances ofsignificant difference could be found. The International Association of ClassificationSocieties (IACS), has adopted the “Unified Requirements”, which, among other things,specifies minimum longitudinal hull girder strength requirements. Applying this uniformstandard for longitudinal strength has the effect of minimizing any resulting differencesbetween societies for the major portion of a ship’s structure (SWBS Group 100). Manyother topics covered by class rules are mandated by the IMO Conventions, and hencesimilar for all societies.

The quantitative treatment develops and compares the midship section scantlings fortwo container ships of modern design. The scantlings for both designs were generatedby applying the minimum scantling rules of three classification societies (ABS, DNV, andGL). The designs used are NASSCO’s R.J. PFEIFFER, a conventional, Panamax shipthat was delivered to Matson Lines in 1992, and BIW/Kvaerner’s BATHMAX 1500, ahigh-speed vessel with a slender, wave-piercing hull.

The results are tabulated along with the “as designed” (BATHMAX 1500) or “as built”(R.J. PFEIFFER) scantlings for the various plates and stiffeners that form thelongitudinally continuous material at the midship section. The key finding from this partof the exercise is that longitudinal strength and fatigue requirements must takeprecedence over the rules for local structure.

For more information contact:National Shipbuilding Research and Documentation Center:

http://ww w.nsnet.com/docctr/

Documentation CenterThe University of MichiganTransportation Research InstituteMarine Systems Division2901 Baxter RoadAnn Arbor, MI 48109-2150

Phone: 734-763-2465Fax: 734-763-4862E-mail: Doc.Center@umich.edu