| 13479A | K3762 | FERRANTI NAVAL SYSTEMS DIV OF GEC MARCONI |
| 13479A | K3902 | BAE SYSTEMS MARITIME SERVICES |
| 13479A AND 1498A | K3762 | FERRANTI NAVAL SYSTEMS DIV OF GEC MARCONI |
| 13479A-2 | K3762 | FERRANTI NAVAL SYSTEMS DIV OF GEC MARCONI |
| 13479A-2 | K3902 | BAE SYSTEMS MARITIME SERVICES |
| 13479A AND 1498A | K3902 | BAE SYSTEMS MARITIME SERVICES |
| 13479A-2 AND 1498A | K3762 | FERRANTI NAVAL SYSTEMS DIV OF GEC MARCONI |
| 1498A | K3762 | FERRANTI NAVAL SYSTEMS DIV OF GEC MARCONI |
| 1498A | K3902 | BAE SYSTEMS MARITIME SERVICES |
| 13479A-2 AND 1498A | K3902 | BAE SYSTEMS MARITIME SERVICES |