| 89 / | HD | ORDNANCE |
|
| 37.01 | DF | MOUNTS {18} |
| 41.01 | DF | .~ Training mechanisms {5} |
| 41.02 |  | .~.~ Motor operated {12} |
| 41.03 | DF | .~.~.~> Predetermining parameters for automatic firing |
| 41.04 | DF | .~.~.~> Eliminates lag or overrun |
| 41.05 | DF | .~.~.~> By television monitoring |
| 41.06 | DF | .~.~.~> By light reception |
| 41.07 | DF | .~.~.~> By radar |
| 41.08 | DF | .~.~.~> By sound |
| 41.09 | DF | .~.~.~> Gyroscopically or pendulum controlled |
| 41.11 | DF | .~.~.~> Compensates for trunnion tilt |
| 41.12 | DF | .~.~.~> By hydraulic means |
| 41.13 | DF | .~.~.~> For scattering effect |
| 41.14 | DF | .~.~.~> For naval gun fire control |
| 41.15 | DF | .~.~.~> With unitary control for plural motors |