JOINT FLEET MAINTENANCE MANUAL

COMFLTFORCOMINST 4790.3 REV A
a. Ship Systems Manual (SSM)/Ship Information Book (SIB). The SSM/SIB (SSM for submarines and
SIB for surface forces) are the primary descriptive and operating manuals for non-propulsion plant ship
systems. They are designed as a class manual and are the basic source of information for locating,
describing and operating the following non-propulsion plant systems:
(1) Mechanical.
(2) Piping.
(3) Electrical.
(4) Electronic.
These manuals do not provide detailed maintenance information but do reference sources of
information on maintaining, testing, troubleshooting, installing and removing these systems and
equipment. SSMs and SIBs must be turned over to the ship prior to or at OCT or custody transfer of the
system or equipment.
b. Engineering Drawings. All engineering drawings belong to one of two groups: ship construction
drawings or equipment drawings. Each group is made up of several types of drawings.
(1) Ship Construction Drawings. These drawings are developed for building the ship and to
reflect installed systems. These drawings are each assigned a seven-digit NAVSEA number
and depending upon the platform a three-digit Component Identification Number/Ship Work
Breakdown Structure/Expanded Ship Work Breakdown Structure may appear on the drawing.
The NAVSEA number identities the drawing and the Component Identification Number/Ship
Work Breakdown Structure/Expanded Ship Work Breakdown Structure assigns the drawing to
a group of related drawings. Ship construction drawings are usually "class drawings"
however, ships of a class, built at different times, may vary from the original design as
improvements are made. This necessitates the development of hull unique construction
drawings which have been verified by the shipbuilder and Supervising Authority to reflect an
individual ship's configuration. Systems requiring these Selected Record Drawings (SRD) are
identified in the ship's building specifications.
(2) Equipment Drawings. Equipment drawings describe equipment shown on ship construction
drawings. They are prepared by industrial activities and/or equipment manufacturers and may
be called vendor drawings. Equipment drawings are rarely assigned NAVSEA or any other
government controlled number. These drawings are identified by a Commercial and
Government Entity code with a manufacturer's drawing number.
c. Drawing Types. Engineering practices have developed common titles that are used on most drawings.
By understanding the kind of technical information associated with each title, the drawing needed for a
given job can be determined. The following is a list of common drawing types (they may be either
equipment or ship construction drawing group types).
(1) System diagrams - A system diagram shows how a system is designed and describes the
relationship among system components. System diagrams do not include physical or
dimensional data, but normally refer to other drawings and documents that contain detailed
information.
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