8-INCH TURRET ASSEMBLY NO. 232 Turret I- USS Salem
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR - REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER - REGULATOR
-
25.0
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.7
-
FUZE SETTING RECEIVER - REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20.5
-
20.5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 132182, 138253.
135
8-INCH TURRET ASSEMBLY NO. 233 Turret II- USS Salem
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.0
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT -
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
-
25.1
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.7
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 132183, 138253.
136
8-INCH TURRET ASSEMBLY NO. 234 Turret III- USS Salem
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER REGULATOR
-
25.2
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.9
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.16
-
-5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 132184, 138253.
137
8-INCH TURRET ASSEMBLY NO. 244 Turret I- USS Des Moines
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1 0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR - REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER - REGULATOR
-
25.0
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.7
-
FUZE SETTING RECEIVER- REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20.5
-
20.5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 132196. 138253.
138
8-INCH TURRET ASSEMBLY NO. 245 Turret II- USS Des Moines
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
-
25.1
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.7
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 132197. 138253.
139
8-INCH TURRET ASSEMBLY NO. 246 Turret III- USS Des Moines
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
-
25.2
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.9
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.16
-5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 132198, 138253.
140
8-INCH TURRET ASSEMBLY NO. 250 Turret I- USS Newport News
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
-
25.0
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.7
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20.5
-
20.5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 116888, 138253.
141
8-INCH TURRET ASSEMBLY NO. 251 Turret II- USS Newport News
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
-
25.1
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.7
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.1
-6
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 166889, 138253.
142
8-INCH TURRET ASSEMBLY NO. 252 Turret III- USS Newport News
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
25.2
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.9
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 166890, 138253.
143
8-INCH TURRET ASSEMBLY NO. 258 Turret III- USS Mississippi
ORDNANCE ASSEMBLY
MARK AND MOD
RIGHT
CENTER
LEFT
GUN
16.0
16.0
16.0
HOUSING
1.0
1.0
1.1
GAS EJECTOR
16.0
16.0
16.1
SLIDE
20.0
20.0
20.1
RAMMER
18.0
18.0
18.1
CASE EJECTOR
1.0
1.0
1.1
DECK LUG
18.0
18.1*
18.0
ELEVATING GEAR
23.0
23.1
23.2
TRAINING GEAR
-
22.0
-
PROJECTILE RING
-
1.0**
-
PARBUCKLING GEAR
-
1.0***
-
PROJECTILE HOIST
31.0
31.1
31.2
POWDER HOIST
36.0
36.0
36.1
SIGHT
-
32.0
-
ELEVATION GUN ATTACHMENT
7.0
7.1
7.2
TRAINING GUN ATTACHMENT
-
7.0
-
FUZE SETTER
20.0
20.0
20.0
FIRING CIRCUIT
-
8.0
-
LIGHTING CIRCUIT
-
8.0
-
FIRE CONTROL EQUIPMENT:
GUN ELEVATION INDICATOR-REGULATOR
47.0
47.0
47.0
TRAIN RECEIVER-REGULATOR
-
25.0#
-
GUN ELEVATION INDICATOR
-
-
45.0
GUN TRAIN INDICATOR
25.7
-
-
GUN ELEVATION ORDER TRANSMITTER
-
-
4.0
TURRET TRAIN ORDER TRANSMITTER
-
14.1
-
RADAR EQUIPMENT
27.0
-
27.0
ANTENNA TRAIN DRIVE
5.0
-
5.0
COMPUTER
-
3.9
-
MULTIPLE TURRET TRAIN INDICATOR
-
12.9
-
FUZE SETTING RECEIVER-REGULATOR
1.1
1.1
1.1
SIGHT SETTER'S INDICATOR
8.0
-
-
TELESCOPE, CHECKER'S
-
-
53.1
TELESCOPE, POINTER'S
-
-
98.0
TELESCOPE, TRAINER'S
99.0
-
-
PERISCOPE
20-5
-
20-5
PERISCOPE MOUNT
5.16
-
5.16
* TWO ASSEMBLIES.
** ONE ASSEMBLY COMPRISES FOUR SEPARATE DRIVES, ONE EACH FOR INNER AND OUTER
RINGS OF EACH FLAT.
*** ONE ASSEMBLY COMPRISES TWO SEPARATE PARBUCKLING GEARS, ONE EACH ON EACH FLAT.
#CHANGE GEARS AND MOD NOT ESTABLISHED AT DATE OF PUBLICATION.
NOTE: THIS INDEX DERIVED FROM SKETCH NOS. 168636, 138253.
144
Appendix 4
SAFETY PRECAUTIONS
Foreword
The statements and data of this appended section of Ordnance Pamphlet 1180 are warnings and safety measures for operation of the turret.
The compilation is a recapitulation of the operating precautions of all chapters of the six volumes of the pamphlet, together with extracts from U.S. Navy Regulations.
This precautionary material is of first importance to the turret organization; every member of the crew should be thoroughly conversant with every warning and the significance or reason for each.
U.S. NAVY REGULATIONS, EXTRACTS
From Article 972
1. As familiarity with any work, no matter how dangerous, is apt to lead to carelessness, all persons who may supervise or perform work in connection with the inspection, care, preparation, or handling of ammunition-
(1) Shall exercise the utmost care that all regulations and instructions are rigidly observed.
(2) Shall carefully supervise those under them and frequently warn them of the necessity of using the utmost precaution in the performance of their work.
No relaxation of vigilance shall ever be permitted.
2. In each part of the ship where ammunition is stored or handled or where gunnery appliances are operated, such safety orders as apply shall be posted in conspicuous places easy of access, and the personnel concerned shall be frequently and thoroughly instructed and drilled in them.
3. Conditions not covered by these safety orders may arise which, in the opinion of the commanding officer, may render firing unsafe.
Nothing in these safety orders shall be construed as authorizing firing under such conditions.
4. The commanding officer shall at any time issue such additional safety orders as he may deem necessary, and a report thereof shall be made to his immediate superior and to the Bureau of Ordnance.
5. When in doubt as to the exact meaning of any safety order, an interpretation should be requested from the Bureau of Ordnance.
6. The Bureau of Ordnance shall be informed of any circumstances which conflict with these safety orders or which for any other reason require changes in or additions to them.
7. Helpful suggestions and constructive criticism of these orders are invited. They should be made to the Bureau of Ordnance through official channels.
8. Changes, modifications in, or additions to ordnance material, or other material used in connection therewith, shall not be made without explicit authority from the bureaus concerned.
9. Safety devices provided shall always be used to prevent possibility of accident, and shall be kept in good order and operative at all times.
10. No ammunition shall be used in any gun for which it is not designated.
11. Handling of ammunition shall be reduced to the minimum to prevent immediate accident
and ..... damage to tanks and cartridge
cases, loosened projectiles, ......
12. Service ammunition is supplied to ships for use in battle. It shall not be used for drill, for testing appliances, or for other similar purposes except upon the express authority of the Navy Department. It shall be regarded as a part of the vessel's outfit, shall be kept distinct from the ammunition used for gunnery exercises, and shall never be expended in gunnery exercises unless authorized in the orders for gunnery exercises or special instructions from the Bureau of Ordnance.
145
13. Special ammunition is issued for gunnery exercises, except when a part of the ship's allowance of service ammunition is designated for that purpose.
14. Only such of the ammunition issued for gunnery exercises as does not contain a primer, fuze, or detonator may (at the discretion of the commanding officer) be used for testing the fit in hoists, guns, and appliances
15. No other than drill ammunition shall be used for drill.
16. The unexpended portion of such ammunition as may have been issued for a specific gunnery exercise or experimental firing shall be turned in as soon as practicable, after such firing, to an ammunition depot, unless additional firings are immediately authorized by the Navy Department.
17. Since the safety in handling and the disposition of ammunition depend upon the correctness of reports and records, care shall be taken not to obliterate identification marks on ammunition or to put it into incorrectly marked containers. When ammunition in other than normal condition is returned to an ammunition depot in compliance with these safety precautions, it shall be marked to indicate its condition and the reason for its return. If smokeless powder is involved, the weight of the smokeless powder returned shall also be indicated.
18. Projectiles shall not be altered, nor shall fuzes or any other parts be removed or disassembled on board ship without explicit instructions from the Bureau of Ordnance. Projectiles shall not be allowed to rust or to become oversize through paint. Slings and grommets and other similar protective devices shall be removed before loading projectiles into guns. Since the slings are likely to jam the hoists, they shall be removed before sending up the projectile.
19. A fuzed projectile, or a cartridge case, whether in a container or not, if dropped from a height exceeding five feet, shall be set aside and turned in to a naval ammunition depot at the first opportunity. (See par. 17.) Such ammunition shall be handled with the greatest care.
20. A loaded and fuzed projectile, seated in the bore of a gun that is hot from previous firing, presents a hazard since detonation of the projectile is probable as a result of being heated.* Whenever practicable, such projectiles should be disposed of promptly by firing the round. Whether a gun is hot or cold, the risks attendant upon removing a loaded and fuzed projectile seated in the bore, by backing out, are considered unwarranted except in the case of guns for which existing instructions specifically prescribe this procedure.
22. Nose fuzes being sensitive, care shall be taken to prevent them from being struck as by the gun in recoil, by ejected cases, by dropping, etc.**
23. Time fuzes which have been set shall be reset on "safety" before sending them below.
26. Smokeless powder shall not be exposed to
the direct rays of the sun. Powder ..... in
tanks, cartridge cases, ..... or in any
other containers shall be protected against abnormally high temperatures over 100°F.)
28. If any smokeless powder be exposed to temperature higher than 100°F., a special report shall be made to the Bureau of Ordnance immediately, explaining the circumstances in detail and stating the temperature and length of time the powder was so exposed.
29. Smokeless powder which has been wet from any cause whatever must be regarded as dangerous for dry storage. Such powder shall be completely immersed in fresh water and kept immersed and landed at an ammunition depot at the first opportunity. (See par. 17.)
30. Smokeless powder in leaky containers shall be transferred to airtight containers, and these must be marked "Transferred from leaky containers." If airtight containers are not available or if the container in use cannot be repaired properly, the powder shall be forwarded to an ammunition depot at the first opportunity, the container being marked "Leaky container." (See par. 17.)
32. Naked lights, matches, or other flame-producing apparatus shall never be taken into magazines or other spaces used primarily as
* See also "cook-off" safety precautions on page 147.
** See "Fuze setter retraction" instruction and precautions, page 151.
146
magazines while these compartments contain
explosives.*
33. Before performing any work which may
cause either an abnormally high temperature or an intense local heat in a magazine or other compartment used primarily as a magazine, all explosives shall be removed to safe storage until normal conditions have been restored.
34. Magazines shall be kept scrupulously clean and dry at all times. Particular attention shall be paid that no oily rags, waste, or other materials susceptible to spontaneous combustion are stored in them.
36. Nothing shall be stored in magazines except explosives, containers, and authorized
magazine equipment.
37. During firing no other ammunition than
that immediately required shall be permitted to
remain outside of the magazines.
38. During action and during target practice
magazine blowers shall be shut down and Covers of both supply and exhaust branches to magazines shall be closed.
42. When cartridges are outside the magazines, wherever practicable, each flameproof compartment or space which forms a stage of the ammunition train, including the magazines
and gun compartments (in or out of turrets), shall be closed from all other compartments or
spaces, except when the actual passage of ammunition requires it to be open. Where practicable, no flameproof stage of the ammunition train shall be open to both the preceding and
the following stages at the same time.**
44. If flame seals be damaged during firing, except in action, so that they cannot fulfill their purpose, the gun or guns concerned shall cease
firing until the flame seals are again effective. 51. Except when using a power rammer, no
force greater than that which can be applied by the hand alone shall be used in loading a live
cartridge into a gun. Any cartridge which does
not freely and fully enter the chamber of the gun shall be carefully extracted and put aside,
and in peace time no further attempt shall be made to fire such a cartridge.
* This means all compartments and levels of the turrets.
** Particularly apply this rule to the hatches in the pan and projectile flats and the turret circular foundation doors.
53. As soon as a gun is loaded the breech shall be closed without delay.
55. A firing lock into which a live primer has been inserted shall never be opened, either independently or by operation of the breech mechanism, unless the firing circuit is broken externally at the lock or breech mechanism (for example, at local pointer's key or gun captain's ready switch), except when it is known that the loaded gun has fired. This applies to the firing of primers at drill, to the operation of loaded guns, and the examination of primers referred to in paragraph 67.
57. Effective measures shall be taken to guard against prematurely opening the breech of a loaded gun, whether or not the gun is filled with a salvo latch.
63. The utmost care shall be taken to insure that the firing pin and other parts of the firing mechanism of a case gun are in good condition and properly assembled in order to prevent premature discharge.
66. If a gun is loaded at the order "Cease firing."
(1) The gun shall remain loaded and shall be pointed and trained in a safe direction;
(2) The breech mechanism shall be kept fully closed;
(3) The firing key shall be opened and the firing circuit broken elsewhere;
The crew shall never leave a loaded gun until these precautions have been carried out.***
67. The possibility of a serious accident due to opening the breech of a gun too soon after a misfire demands the constant exercise of the utmost prudence and caution. After an unsuccessful attempt to fire a gun, it shall be assumed that a hangfire is under way; and the procedure outlined below shall be followed:
(1) Keep the gun pointed and trained in a safe direction.
(2) Continue attempts to fire, if desired, provided such efforts do not involve any movement tending to open the breech.
(3) Do not open the breech for 30 minutes ..... after the last attempt to fire. This, at the discretion of the commanding officer, is not obligatory in time of action.
*** See "Cease fire" unloading instructions and procedures, Chapter 5, OP 1180 (Volume 2).
147
69. Ammunition unloaded from a gun may be reloaded if the service of the gun is resumed within a reasonable time. When it is apparent that the service of the gun will not be resumed within a reasonable time, the powder unloaded from a gun shall be disposed of as follows:
The cartridge shall be turned in to an ammunition depot at the first opportunity if-
(1) The gun was warm when loaded;
(2) An attempt was made to fire the gun;
(3) After careful examination the cartridge is found injured or out of alignment.
Crimped cartridges shall not be broken down before being turned in. Uncrimped cartridges shall be broken down and the powder immersed in fresh water before being turned in.
70. When a gun is being unloaded, all personnel not required for the unloading operation shall be kept at a safe distance from the gun. The division officer shall supervise the unloading.
72. Marks or indicators shall be provided to indicate whether or not the gun returns to battery ..... The service of the gun shall be stopped should the gun fail to return to battery.*
73. On guns equipped with hydropneumatic counterrecoil systems, the safety link, locking the gun to the slide, shall be connected up at. all times except when firing, or when testing and overhauling the counterrecoil systems, or when the battery is in a condition of readiness for action. These safety links shall be disconnected after checking the pressure on counterrecoil system and prior to firing.
79. Fired cartridge cases shall, before storing below, he stood on their bases in the open air for ten minutes in order to avoid danger from inflammable gases.
81. In testing primers outside of closed firing locks, no magneto or other device which can possibly supply current sufficient to fire the primer shall be used.
82. Whenever any motion of a power-driven unit is capable of inflicting in jury on personnel or material not continuously visible to the person controlling such motion, the officer or petty
* Gun will not fire if it is 0.25 inch, or more, out of battery. Thus observation of the indicator marks is one of the checks for cause of misfire.
officer who authorizes the unit to be moved by power shall, except at general quarters, insure that a safety watch is maintained in areas where such injury is possible both outside and inside the unit, and shall have telephone or other effective voice communication established and maintained between the station controlling the unit and the safety watch. These precautions are applicable to turrets ..... Under the conditions stated above, the station controlling shall obtain a report "all clear" from each safety watch before starting the unit. Each safety watch shall keep his assigned area clear and if unable to do so shall immediately report his unit fouled, and the controlling station shall promptly stop the unit until again clear.**
83. In turrets ..... a warning signal
shall be installed outside the turret ..... and whenever power train is used, except at general quarters, the officer or petty officer in
charge of the turret ..... shall cause
warning signals to be sounded before using power and at intervals during its use.
84. When using director train while firing at gunnery exercises, an observer from the firing vessel for each gun or turret shall cause the firing circuit to be broken whenever the gun or turret is trained dangerously near any object other than the designated target.
86. Except in action, whenever a circuit breaker becomes so sensitive as to function due to the shock of firing, the circuit breaker shall be either overhauled or replaced and shall not be tied or fixed in position so as to be inoperative for the purpose for which designed.
87. The covers of switches, circuit breakers, etc., shall be kept securely closed while powder is exposed in the vicinity.
88. Whenever the guns of a vessel are fired, the fire hose shall be connected and pressure shall be maintained on the fire main. This does not require water to be running through the hose. ***
89. Turret and handling room sprinkling systems shall be tested and all tanks of these systems filled before firing.
** This regulation is particularly applicable to CA 139 class turrets.
** It does in the instance of the firemain supply of this turret design.
148
91. (a) Before firing any gun, other than a saluting gun, in time of peace, the recoil cylinders shall be inspected and filled in the presence of the gunnery officer or assistant gunnery officers, and such officer shall check the pressure being carried by the pneumatic counter-recoil cylinders and verify that the air systems are properly charged and that the valves of the gas-ejector system operate freely; and a report thereof shall be made to the commanding officer.
(b) Whenever there is a possibility of action, the commanding officer shall require all recoil and counterrecoil systems to be kept ready for immediate use and inspected as frequently as safety demands.
93. Before firing primers, the division officer will see that the gun tompions are removed ..... In preparing the battery for firing he shall, in addition, see that the gas-ejector system, and the turret-blower system are working satisfactorily and that the bore of the gun is in satisfactory condition.
94. Steel constrictions of the bore, usually caused by the gun liner overriding the retaining shoulders in the tube, are a source of possible danger in firing. It is not always possible to distinguish copper constrictions from steel constrictions. Therefore no gun shall be fired in target practice unless the bore gage will pass through the entire bore without undue forcing. After target practice the gage shall be tried in each gun and the bore enlarged, if necessary, until the gage will pass.
TURRET GENERAL PRECAUTIONS
DANGER. Live 440-volt leads are exposed whenever covers of the bus transfer panel, equipment panels, controllers, motor terminal boxes, and many of the control panels and connection boxes are open.
DANGER. Never enter the cable trunk at the foot of the central column or the wiring recess at the top until the 440-volt supply switches are open at NORMAL and EMERGENCY supply switchboards.
Always open the 440-volt supply switch at the equipment panel as well as the controller concerned when preparing to work on any power driven assembly.
Never close the supply switches of the automatic control circuits of guns, elevating drives,
and ammunition hoist until all personnel have been cleared from the slide and the gun pits.
DANGER. Never fire the guns with personnel on or in the truss girders or in the gun pits.
DANGER. Always close and secure the pan plate hatches, the projectile flat hatches, and the turret circular foundation doors before firing the gun.
DANGER. Always start the ventilating systems and open the gas-ejector system valves before firing the guns.
ORDNANCE EQUIPMENT PRECAUTIONS
Personnel danger
Always be sure that all operating ways of the gun, slide, and ammunition handling equipment are clear of personnel before operating the gun. When starting operations, never shift gun and hoists control supply switches A, B and C from their stowed OFF positions, nor shift the hoist function control selector levers from their stowed positions at STOP, until all hoist loading stations report CLEAR and personnel are out of gun pits.
Never fire the guns without first checking the recuperator air pressure and differential fluid.
Man the gun captains' control panels at all times; never tie down the rammer controls.
Never put hands, feet or head into a hoist way or path of a cradle, transfer tray, slide, or housing when power is ON.
DANGER. Never climb through the archways of the projectile flats when the projectile ring power drives are operating; always stop the electric motor of the inner drive ring.
Never attempt to parbuckle projectiles through the gates of the inner ring; always man-handle projectiles through the gates and then only when the power drive is stopped.
Always use the steady arm mechanism to load the projectile hoist; it is safer than manhandling.
Never start the elevating gear until the gun pits are cleared of all personnel.
DANGER. Never perform gun sliding-out exercise without setting the securing pin in its 20° elevation socket.
Never enter the gun pits except when the slide securing device is engaged.
Always lash all projectiles carefully, inspecting all toggle links, before going to sea.
149
Always latch the transfer trays when manually unloading the cradles to return ammunition units to the hoist.
Never return H.C. projectiles from the cradle to the hoist without first moving switch BW to SAFE for an elapsed time of at least 30 seconds.
Always operate the elevating gear separately in HAND control, slowly, when setting the slide securing and steady rest pins at secured position.
Always latch the transfer trays in firing position before working in the slide loading-tray area.
Never perform maintenance work on gun equipment with valve T open.
After any dismantling or repair work involving the cradle control switches, perform a thorough continuity check of the circuits. This is extremely important; the connections can be reversed so that the cradles can operate without the pawl functioning to hold ammunition.
Do not unscrew hydraulic adjustments excessively. There is danger of injury to personnel and equipment because of the hydraulic pressure.
If a cradle is raised to the slide to facilitate repair work in the gun pit, secure it with timber or lashing before proceeding with the work.
Never adjust the gas-ejector pilot valve to cause air ejection for less than 2.5 seconds.
WARNING. Always observe all cautions listed under "Turret general precautions," page 149.
Equipment casualty
Gun equipment precautions
PREPARATION PRECAUTIONS
Check recuperator air pressure and differential fluid.
Check recoil cylinder fluid level.
Check the fluid level of all slide equipment buffers.
Check firing circuit interlock switches in transfer trays.
Unship the tompions.
Unlatch the case ejector cover and tighten the securing bolts to their stowed positions.
Disengage and stow the gun locking device.
Retract the slide securing and steady rest
pins.
Uncouple the manual breech operating mechanism.
Make certain that all operating ways of breech and slide are clear.
Prove the gun control action by operating breech, rammer, and trays through two power cycles.
Observe the hoist operating precautions, under "Ammunition handling equipment precautions," page 151, before serving ammunition.
FIRING PRECAUTIONS
Man the gun control panel at all times, never tie down the rammer control.
Observe the continuity of the control ready light system for every round; shift the ready switch to SAFE immediately if the action stops.
MISFIRE PRECAUTIONS
Shift the READY switch to UNLOAD position at once. Unload or fire the gun, observing Navy Regulations. See pages 147-148.
Never attempt to remove a jammed empty cartridge case from the case-ejector rear compartment by operating the transfer trays to FIRE; always extract through the portable cover at the rear end of the case ejector.
STOWING PRECAUTIONS
Secure the gun locking device immediately after "Cease fire."
Always seat the securing pin and run-out the steady rest pin.
Always stow with valve T closed.
Always install tompions or canvas covers on gun muzzles.
Always close and secure the empty-case tube covers.
MISCELLANEOUS PRECAUTIONS
Do not attempt power operation of the breech with the manual mechanism clutch engaged.
Use utmost care to avoid damaging the breech mechanism when removing a drill or live projectile from the gun chamber by means of the backing-out rammer. If practicable, have guns trained fore or aft to minimize the effect of the roll of the ship.
Use clean, soft cloth only to wipe the recuperator plunger. Scratches will cause loss of air
charge. No rust-protection oil film is required.
Never use an organic or heavy oil or grease
to coat the gun bore, chamber, or gun and slide
150
bright work, or to lubricate the firing pin. Use authorized lubricant only.
Never use abrasives or detergent or caustic solutions to remove discoloration or smoke rings from the gun bore; use an oil-soaked cloth.
Always adjust the manual drive breech mechanism handwheel release to slip at a maximum of 30 pounds pressure on the handwheel grip. This is a safety release which is less effective if set higher.
Ammunition handling equipment precautions
Before raising ammunition into the cradles, verify that the ram retractor is at SAFE. Complete ejection into the transfer trays cannot be obtained with the retractor lug in the path of the ram.
Never depress a hoist trigger with the hands, always use the trigger handle to actuate the cycle.
Always retract the fuze setter when hoisting A.P. projectiles.
Always secure the fuze setter in retracted position when stowing the hoist or when preparing to lower projectiles.
When handling powder between the magazines and hoist scuttles, avoid rough treatment that may cause the primer bridge to break.
Always stow the cradles in their lowered positions.
If a cradle is raised to the slide to facilitate repair work in the gun pit, secure it with timber or lashing before proceeding with the work.
Never feed ammunition units into a hoist with the shutters detented open.
At "Cease fire," after ammunition has been returned to the conveyor, restore the ram retractor to SAFE position before securing.
Never use the steady arm mechanism to unload projectile hoist. Loop the snubbing rope over the projectile to withdraw.
Never loop snubbing rope above the copper rotating band on a projectile when parbuckling (without the steady arm); always loop the rope below the rotating band.
Never loop a snubbing rope more than three turns around a gypsy head; two turns are usually sufficient.
Never attempt to unload a hoist without latching the shutters open; always use the
shutter handle to swing the shutter to open detent position.
The preferred safe direction for operating the projectile rings to load center and right projectile hoists is clockwise; for loading left hoist, counterclockwise. These directions of rotations give more clear working area for the projectile men and do not move loaded areas of the projectile rings toward the steady arm operators.
When unloading the powder hoist, use the powder can tool to unload the powder cases from the scuttles.
Always stow projectile rings with both centering pins of each securely seated.
Always lash all projectiles carefully, inspecting all toggle links, before going to sea.
Always secure the steady arm mechanisms before going to sea.
Never attempt to load or unload a projectile ring when it is in motion.
Always check the correct functional arrangement of circuit RP for the outer projectile ring warning system before starting operations.
Always inspect the projectile ring for loose tools or other obstructions before starting operations.
When reversing the direction of projectile ring rotation, permit the ring to come to a full stop before reversing handwheel rotation.
Keep projectiles secured on the projectile ring until rotation stops; then unclamp only the projectiles which are to be parbuckled. In rough weather, unclamp the projectiles one by one as needed for parbuckling.
Always latch the transfer trays when manually loading the cradles to return ammunition units to the hoist.
Always stow the pawl handle for the projectile hoist upper loading level pawls in nonoperating position; assemble in its operating position only when projectiles are to be lowered to the lower projectile flats. When the pawl handle is used, secure it; do not let it hang free.
Never return H.C. projectiles from the cradle to the hoist without first moving switch BW to SAFE for an elapsed time of at least 30 seconds.
Always stow switch BW at OFF position.
Never adjust a gypsy head slip clutch to release at a snubbing rope pull in excess of 650 pounds.
151
Refer to the "Personnel danger precautions" on pages 149-150.
Gun laying equipment precautions
Always man the pointer's station whenever any elevating gear is operating.
Never attempt to start any elevating gear drive with the control selector switch in any position other than HAND. When shifting the elevating gear controls from HAND to LOCAL, match the pointer's handwheel dial to gun position before shifting the selector switch to LOCAL.
Always synchronize gun position with gun order before shifting to AUTO control.
Always shift the control selector switch of each elevating gear drive to HAND position before stopping the drive.
Protect each elevating drive from backlash vibration and seaway stresses by setting the securing and steady rest pins at 0° secured position when the drive is not operating.
Never attempt to adjust the elevating gear limit stop without first disengaging the regulator response-plus-tilt and elevating inputs.
WARNING. After servicing an elevating gear, do not operate it with the inputs coupled until the fire control instruments have been synchronized with turret and gun laying movements.
Never attempt to improve the operation of an elevation indicator-regulator if the performance is satisfactory.
Training gear equipment precautions
Always man the trainer's station whenever the drive is operating.
Always retract both centering pins before starting the training gear drive.
Always place the control selector lever at HAND before starting the drive.
When shifting from HAND to LOCAL and then to AUTO control, synchronize turret
position with the train order before shifting the control selector.
Always shift the control selector to HAND before stopping the drive.
Operate the drive slowly in HAND when locating center pin positions.
Protect the train drive from backlash and the roller path from deformation by setting both centering pins tight whenever the drive is not operating.
Never attempt to improve the operation of the train receiver-regulator if the performance is satisfactory.
Fire control equipment precautions
Never attempt to set the sights when any appreciable effort is required to turn the sight setter's hand cranks. Stop and investigate. Find and remove the cause of the abnormal load before resuming operation.
Exercise the sights and gun attachments periodically and frequently through full range of movements.
Dry out and ventilate sight hoods daily. Clean and dry telescope objectives.
Always keep the sight hood shutters closed when the sights are not in use.
Never make internal adjustments or open any fire control instrument without cause.
When securing fire control equipment after operations, open all transmission, communication, and lighting circuits at the instrument controls as well as the turret officer's transfer switchboard.
Never adjust sights and gun attachments without cause, and then only in the prescribed order. Adjustments made out of order will upset other adjustments.
Never attempt to improve the operation of fire control equipment if performance is satisfactory.
Whenever trouble occurs, test the equipment in all types of control, to isolate the cause, before resorting to disassembly or adjustment.
152
INDEX
Subject
Page
Ammunition hoist equipment
general description
37-41
hoist controls
41
hoist power drive
41
powder hoist
41
projectile hoists
41
Auxiliary installations
air supply services
66, 67-69
communications
61-63, 65
counterrecoil air supply
68-69
gas ejector supply
67-68
hydraulic equipment filter system
69
illumination
64, 65, 67
power supply
49-50
sprinkling system
55-60
ventilating system
52, 54-55
Communications
automatic telephone system
65
battle telephone system
61
"cease firing" signal system
61
circuits, list
61
depression and train stop signal system
61
general arrangement
62-63
intra-turret emergency alarm system
61
ready light system
61
salvo signal system
61
sound-powered telephone call bell system
65
supplementary sound-powered telephone
61, 65
train warning signal system
61
turret announcing system
61
Counterrecoil air supply
general description
68-69
Data
ordnance
See Appendix 2
133-134
turret
3, 4
See also Appendix 1
131-132
Fire control equipment
fuze setting control
49
general description
43, 45
gun firing control
49
pointer's station
45-46
sights and gun attachments
43, 45
trainer's station
44-45
153
Subject
Page
turret officer's control equipment
45, 47, 48-49
Firing operations
first round
104-108
gun laying, firing
109-113
normal automatic fire
108-109
range estimating
116-117
sighting
115-116
turret operation, hand (emergency) control
115
turret operation, local control
113-115
Fixed structure
base casting
11
barbette
11, 13
lower roller track
11
powder handling flat
11
turret circular foundations
10
Gas ejector supply
general description
67-68
Gun and slide assemblies
gas ejector
23
gun
22
gun control system
26-27
gun housing
23
slide
23-26
slide power equipment
26
Gun casualty operation
manual case ejection
120
manual case extraction
120
manual hoist operation
120-121
manual projectile extraction
120
misfire operations
117-120
Gun house
armor
4-5
details
3-4
general description
3
gun ports
5-6
structural plan
3-6
subdivision
6
Gun laying equipment
elevating gear
35
elevating gear control
35
general description
26, 29
pointer's control equipment
34, 35, 37
trainer's control equipment
30-31, 35
training gear
29
training gear control
29-30
Illumination
general turret
64-65
instrument
65, 67
Index of assemblies
See Appendix 3
135-144
154
Subject
Page
Hydraulic equipment filter system general description
69
Ordnance data
See Appendix 2
133-134
Ordnance equipment preparations and starting operations energizing main power circuit
99
general discussion
98
safety checks, operating precautions, tests
99
setting controls; energizing control circuits
102-104
starting drives
99-102
Ordnance installations
ammunition hoist equipment
37-41
data
See Appendix 2
133-134
design identities
13, 15-16
designs
21
differences
13
fire control equipment
43-49
gun and slide assemblies
22-26
gun house ordnance arrangement
16-18
gun laying equipment
26-37
gun pits ordnance arrangement
18
index of assemblies
See Appendix 3
135-144
location arrangements
16
lower projectile flat ordnance arrangement
20
powder handling flat ordnance arrangement
20-21
projectile stowing and handling equipment
41-43
references
16
types
13
upper projectile flat ordnance arrangement
19-20
Personnel duties
checker
87-89
computer operator
79-80
electrician (lower projectile flat)
91
electrician (turret officer's booth)
81
gun captains
81
gun captain's assistants
81-82
parbucklers
90-91
petty officer in charge (powder handling room)
91-93
pointer
87
powdermen
93
projectile ring operators
89, 91
projectile men
90-91
radar operators
80-81
sight setter
85, 87
talkers
79
trainer
82-85
turret captain
78-79
turret officer
77-78
155
Subject
Page
Power supply
general description
49-50
illumination supply
50, 52
Preparing for operation
casting loose
95-98
establishing communications
98
general
93
manning stations
93-91
starting operations
94-95
Projectile stowing and handling equipment
general description
41
parbuckling gear assemblies
42-43
projectile ring drives
41-42
Rotating structure
dimensions
3
general description
1-3
gun house structural plan
3-6
suspended structure
6-8
Safety precautions
See Appendix 4
145-152
Securing operations
conditioning for stowing
123
securing
123-126
stopping equipment
121-123
Ship
armament
vii-viii
description
vii
Sprinkling system
air control plug cock
58-59
automatic rate-of-rise control devices
60
control stations
58-59
general arrangement
53, 55
general description
55
hydraulic control piping system
57-58
preparation for operation
59
rotating firemain connection
55
sprinkling distribution system
55-57
testing operation
60
turret firemain tubing
55
valve label plates and instruction plates
59
vent and gage air piping system
57
Stowing ammunition
hatchway route
126-127
hoist route
128-129
Structural assembly
armor
4-5
general description
1
gun house structural plan
3-6
rotating structure
1-3
suspended structure
6-8
156
Subject
Page
Suspended structure
details
6-8
general description
6
skirt plate
8
upper roller path
6
Turret
air supply. services
66, 67-69
armor
4-5
auxiliary installations
49-69
captain
78-79
communications
61-63, 65
components
1
crew stations
74-76
data
3, 4
See also Appendix 1
131-132
firing cycle
73
firing operations
104-117
fixed structure
10-13
general description
1-69
hydraulic equipment filter system
69
illumination
64, 65, 67
officer
77-78
operation
71-129
operation, hand (emergency) control
115
ordnance installations
13-49
personnel duties
77-93
personnel organization
73
power supply
49-50, 52
preparing for operation
93-98
roller bearing
8-10
rotating structure
1-8
securing
121-126
sprinkling system
53, 55-60
starting operations
98-104
structural assembly
1-13
suspended structure
6-8
ventilating system
52, 54-55
Turret data
armor
4
dimensions, rotating structure
3
See also Appendix 1
131-132
Turret roller bearing
cage sectors
9-10
components
9
general description
8-9
roller access
10
rollers
9
Ventilating system
general description
52, 54-55
157
DISTRIBUTION
Requests for additional copies of OP 1180 (Vol. 1) should be submitted to the Chief of the Bureau of Ordnance, Washington 25, D. C.
Standard Navy Distribution List No. 46 (Part 1) and Edition No. 4 (Part 2) to Catalog of Activities of the Navy.