MIL-DTL-24784/5C(NAVY)
a.
A short explanation of the design philosophy used to develop the operational system.
b.
A brief description of the design criteria that optimized the procedures and minimized the manning
requirements within the configuration.
c.
A statement indicating that the procedures were developed within the arrangement according to analytical
techniques, and that any changes in the arrangement might severely hamper the effectiveness and efficiency
of the system.
d.
An explanation as to why this configuration, with the operational procedures contained in the OSB, benefits
the operator. A statement shall be included to the effect that the operator was given prime consideration
throughout the development of the procedures presented.
e.
A statement of reporting errors (see TMDER in Appendix A of MIL-DTL-24784).
3.8 Contents. The contents shall be limited to information required by the user (operator) to understand and
carry out the required functions of the shipboard operational system. Only major functional units of equipment shall
be included in the OSB. The contents shall be organized in a format so that only those changes which affect the
ships functional operations will require revision to the OSB. To avoid the requirement for minor revisions, the
following shall not be included in the OSB:
a.
Specific military designations for equipment or system nomenclatures (use of general terms is intended).
b.
Course numbers for service schools or correspondence courses.
c.
Specific characteristics of the ship, systems, or equipment.
d.
Listings of items such as equipment, systems, or armaments.
e.
Equipment operating instructions contained in technical manuals.
3.8.1 Symbology. The symbology employed on the contents of the OSB shall be standardized. It is extremely
important that the OSB users have a thorough understanding of the meaning and use of the various symbols.
Symbols not only provide the design engineer a means of examining the numerous operational tasks to be
performed, but once established, if properly interpreted and employed, the symbols greatly facilitate and simplify
operator training and user understanding of the functions to be performed. The symbols to be employed in the OSB
to denote actions shall be as specified in 3.8.1.1 through 3.8.1.7 and sequential employment of symbology shall be
as shown on figure 2.
3.8.1.1 Transport. An open arrow shall be employed to denote movement of personnel material or transfer of
information (see figure 2).
3.8.1.2 Operation. An open circle shall be employed to denote an operation performed.
3.8.1.3 Inspection. An open rectangle shall be employed to denote a test or examination.
3.8.1.4 Mandatory actions. Solid line symbols shall be employed to denote mandatory actions. Solid lines
connecting the symbols shall be employed to denote mandatory sequential actions (see figure 2).
3.8.1.5 Optional actions. Dash (broken line) symbols shall be employed to denote optional actions. Dash lines
connecting symbols shall be employed to denote optional sequential actions (see figure 2).
3.8.1.6 Double symbols. Combined symbols shall be employed where the exterior symbol denotes the primary
action and the interior symbol denotes the secondary action within the sequence of events (see figure 2).
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