| 334511 |
Sextants (except surveying) manufacturing |
| 334511 |
Sonabuoys manufacturing |
| 334511 |
Sonar fish finders manufacturing |
| 334511 |
Sonar systems and equipment manufacturing |
| 334511 |
Space vehicle guidance systems and equipment manufacturing |
| 334511 |
Speed, pitch, and roll navigational instruments and systems manufacturing |
| 334511 |
Taffrail logs manufacturing |
| 334511 |
Underwater navigational systems manufacturing |
| 334511 |
Warfare countermeasures equipment manufacturing |
| 334511 |
Wheel position indicators and transmitters, aircraft, manufacturing |