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INTERNATIONAL

SOCIETY OF ALLIED

WEIGHTS ENGINEERS, INC.

R E C O M M E N D E D P R A C T I C E N U M B E R XX

Serving the Aerospace - Shipbuilding - Land Vehicle and Allied Industries

Executive Director P.O. Box 60024, Terminal Annex

Los Angeles, CA 90060

Date Issued 4 March 2011

Expanded Work Breakdown Structure Weight Classification Guidance

Revision Letter 2

Prepared by Government - Industry Workshop

Society of Allied Weight Engineers, Inc. All SAWE technical reports, including standards applied and practices recommended, are advisory only. Their use by anyone engaged in industry or trade is entirely voluntary. There is no agreement to adhere to any SAWE standard or recommended practice, and no commitment to conform to or be guided by any technical report. In formulating and approving technical reports, the SAWE will not investigate or consider patents that apply to the subject matter. Prospective users of the report are responsible for protecting themselves against liability for infringement of patents. Notwithstanding the above, if this recommended practice is incorporated into a contract, it shall be binding to the extent specified in the contract.

SAWE RECOMMENDED PRACTICE

SAWE Recommended Practice No. XX

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Change Record

Issue No. Date Description Entered by

1 4/20/2010 Original Draft Matthew Yoder

2

3/4/2010 Second Draft Matthew Yoder


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Table of Contents 1 Scope .......................................................................................................................... 4 2 Purpose ....................................................................................................................... 4 3 Associated Documents ............................................................................................... 4 4 Definitions, Abbreviations, Acronyms ....................................................................... 5 5 Weight Classification Guidance ................................................................................. 6

5.1 Integrated Power System (IPS).......................................................................... 6 5.2 Dual Band Radar (DBR) ................................................................................... 6 5.3 Electronic Module Enclosures (EME), Rafts, and Skids ................................... 6

5.3.1 EME .............................................................................................................. 6 5.3.2 Rafts .............................................................................................................. 6 5.3.3 Skids .............................................................................................................. 6

5.4 Fiber Optics ....................................................................................................... 7 5.5 Total Ship Computing Environmental Infrastructure (TSCEI) ......................... 7

6 Three Digit Weight Classification System ................................................................. 8 6.1 100 HULL STRUCTURE ................................................................................. 8 6.2 200 PROPULSION PLANT ............................................................................ 18 6.3 300 ELECTRIC PLANT ................................................................................. 28 6.4 400 COMMAND AND SURVEILLANCE .................................................... 34 6.5 500 AUXLARY SYSTEM .............................................................................. 47 6.6 600 OUTFIT AND FURNISHINGS ............................................................... 64 6.7 700 ARMAMENT ........................................................................................... 74 6.8 F00 LOADS (FULL LOAD CONDITION) .................................................... 83

A. Appendix Group 100 Drawings ................................................................................. 1 B. Appendix Group 200 Drawings ................................................................................. 1 C. Appendix Group 300 Drawings ................................................................................. 1 D. Appendix Group 400 Drawings ................................................................................. 1 E. Appendix Group 500 Drawings ................................................................................. 1 References ........................................................................................................................... 1


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1 Scope This recommended practice provides clarification and guidance for implementing the Expanded Ship Work Breakdown Structure (ESWBS) weight classification system. This guidance provides a common weight system that transcends all ship classes. The recommended practice will provide a static classification system based on the original 1985 ESWBS document and the current dynamic database. This document does not replace ESWBS for historical weight keeping. The purpose of this document is to incorporate weight classification changes due to changing technology, construction practices, and other issues as they arise.

2 Purpose

There is a need for guidance on the use of the current weight classification processes and practice. Currently there resides a different weight classification system for different ship classes based off of the 1985 ESWBS document. The current database for weight classification is available only online and does not contain detailed descriptions for weight classification. Additionally, certain new technologies do not have a home in the current weight classification system. The purpose of this document is to provide clarification for using the ESWBS weight classification system in a static form that includes details. To correctly catalog new technologies additional weight classification is need in order to ensure commonality between ship classes. Some technology can be classified under the current structure, requiring only additional definitions to be added to the current system. Additional groups are necessary to accommodate other technologies. To accommodate new technologies, this guidance has re-titled groups, created groups, and added detailed definitions to groups. As new technology becomes available additional guidance will be included to ensure commonality in weight classification.

3 Associated Documents This optional section should show complementary or other associated documents used with this RP. This is not a bibliography of citations used within this document; that is found at the end of the document. This recommended practice shall be used in conjunction with the following publications. When the following specifications are superseded by an approved revision, the revision shall apply.

1) Expanded Ship Work Breakdown Structure (ESWBS 1985) 2) NAVSEALOGCEN Electronic ESWBS Database. 3) SAWE RP 12 4) Marine Vehicle Weight Engineering 5) Society of Allied Weight Engineers ESWBS Workshop October 2010.


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4 Definitions, Abbreviations, Acronyms

Table 1 Term Symbol Definition

DBR Dual Band Radar

Decks Continuous structure that extends fore and aft from shell to shell

EME Electronic Module Enclosures

ESWBS ESWBS Expanded Ship Work Breakdown Structure

IPS Integrated Propulsion System

Flats Intermediate deck that extends one or less stations

Platform Intermediate deck that extends multiple stations but does not extend the length and breadth of the ship

Rafts A common foundation that primarily houses equipment for a single function and/or system

Skids A common foundation that houses equipment for multiple functions and/or systems