| 74 | 1st Level Items |
| 119 | Access Arrangements |
| 150 | Air Flow |
| 112 | Air intakes and exhausts |
| 111 | Air Intakes and exhausts |
| 33 | Ammunition Route Loading |
| 58 | Ammunition Routes |
| 2 | Angle of List |
| 13 | Angle of List |
| 19 | Angle of List |
| 47 | Atmosphere Monitoring |
| 146 | Aviation Compartments, incl Offices, Role Equip Stores and Workshops. |
| 32 | Blast Reduction Systems |
| 59 | Blast Reduction Systems |
| 36 | Breathing Apparatus Provision |
| 15 | Bulkhead Strength (Stability) |
| 80 | Control Surface Failure |
| 104 | Control Surfaces |
| 76 | Critical Hole Size (Deballasting) |
| 86 | Critical Hole Size (Recovery to surface) |
