such as width, breaks in the line, and zigzags have
meaning, as shown in figure 1-7.
Blueprints are usually called plans. Some
common types used in the construction, operation,
and maintenance of Navy ships are described in the
PRELIMINARY PLANS are submitted with bids
or other plans before a contract is awarded.
CONTRACT PLANS illustrate mandatory design
features of the ship.
CONTRACT GUIDANCE PLANS illustrate
design features of the ship subject to development.
STANDARD PLANS illustrate arrangement or
details of equipment, systems, or parts where specific
requirements are mandatory.
TYPE PLANS illustrate the general arrangement
of equipment, systems, or parts that do not require
strict compliance to details as long as the work gets
the required results.
WORKING PLANS are those the contractor uses
to construct the ship.
CORRECTED PLANS are those that have been
corrected to illustrate the final ship and system
arrangement, fabrication, and installation.
Figure 1-7.Line characteristics and conventions for MIL-STD drawings.