BLUEPRINT NUMBERING PLAN

In the current system, a complete plan number has five parts: (1) size, (2) federal supply code identification number, (3 and 4) a system command number in two parts, and (5) a revision letter. The following list explains each part.

1. The letter under the SIZE block in figure 1-1, view A, shows the size of the blueprint according to a table of format sizes in MIL-STD-100.

2. The federal supply code identification number shows the design activity. Figure 1-1, view A, shows an example under the block titled CODE IDENT NO

Figure 1-7.-Line characteristics and conventions for MIL-SDT drawings-Continued.

where the number 80064 identifies NAVSHIPS. In view B, the number 80091 identifies the Naval Facilities Engineering Command.

3. The first part of the system command number is a three-digit group number. It is assigned from the Consolidated Index of Drawings, Materials, and Services Related to Construction and Conversion, NAVSHIPS 0902-002-2000. This number identifies the equipment or system, and sometimes the type of plan. In figure 1-1, view A, the number 800 under the NAVSHIP SYSTEM COMMAND NO. block identifies the plan as a contract plan.

4. The second part of the system command number is the serial or file number assigned by the supervisor of shipbuilding. Figure 1-1, view A, shows the number 2647537 as an example under the NAVSHIP SYSTEM COMMAND NO. block.

5. The revision letter was explained earlier in the chapter. It is shown under the REV block as A in figure 1-1, view A.

Figure 1-8, view B, shows the shipboard plan numbering system that was in use before the adoption of the current system (view A). They two systems are similar with the major differences in the group numbers in the second block. We will explain the purpose of each block in the following paragraphs so you can compare the numbers with those used in the current system.

The first block contains the ship identification number. The examples in views A and B are DLG 16 and DD 880. Both refer to the lowest numbered ship to which the plan applies.

The second block contains the group number. In view A, it is a three-digit number 303 taken from NAVSHIPS 0902-002-2000 and it identifies a lighting system plan. View B shows the group number system

Figure 1-8.-Shipboard plan numbers.

in use before adoption of the three-digit system. That system used S group numbers that identify the equipment or system concerned. The example number 53801 identifies a ventilating system. To use this number, relate it to the proper chapter of an NSTM. Replace the S with the 9 of an NSTM chapter number and drop the last digit in the number. For example, the number 53801 would produce the number 9380, or chapter 9380 of the NSTM titled "Ventilation and Heating."

Blocks 3, 4, and 5 use the same information in the old and new systems. Block 3 shows the size of the plan, block 4 shows the system or file number, and block 5 shows the version of the plan.

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