| B03 | Electrical and electro work |
| C04 | Workshop equipment |
| K02 | Power cables |
| L08 | Monitoring equipment |
| L11 | Signal cables & connectors |
| O03 | Safety equipment |
| P03 | Radio & telephone communication |
| P04 | Satellite communication |
| P05 | Other communication equipment |
| P07 | Antennas & transmitters |