- Automatic pilot systems, submarine
- Automatic pilot systems, warship
- Compasses, gyro, shipborne
- Compasses, magnetic, shipborne
- Data transmission systems, shipborne
- Depth and course control systems, submarine
- Heading and vertical reference systems, shipborne
- Heading repeater equipment, shipborne
- Logs, ship
- Logs, ship, electromagnetic
- Maintenance, repair, overhaul services, ship
- Maintenance, repair, overhaul services, submarine
- Navigation equipment, airborne radio
- Navigation radars, shipborne
- Navigation systems, shipborne
- Platform and system maintenance trainers, army-related
- Stabilization systems, warship
- Steering control systems and equipment, warship
- Steering wheels, ship
- Technical manuals, documentation services
- Technical training services