Especially large weapons are called Ordnance. These weapons are so huge and powerful that they cannot be physically carried but must be mounted onto a vehicle or be built into the structure of a fortress. For the most part they are used by the heavily mechanised armies of the Imperial Guard. Space Marines have little use for such slow and cumbersome equipment, but their Whirlwind rocket launcher does fall into this category – although it is the lightest weapon that counts as Ordnance.
ORDNANCE TABLE
| Weapon | Range | Str. | AP | Type |
|---|---|---|---|---|
| Battle Cannon | 72" | 8 | 3 | Ordnance 1/Blast |
| Demolisher | 24" | 10 | 2 | Ordnance 1/Blast |
| Griffon Mortar | 12-48 Guess | 6 | 4 | Ordnance 1/Blast |
| Earthshaker | 120" | 9 | 3 | Ordnance 1/Blast |
| Whirlwind | 48" Guess | 5 | 4 | Ordnance 1/Blast |
Make no mistake, ordnance weapons are huge. So big in fact that a vehicle cannot do anything else in the same turn that it fires its ordnance. It is therefore impossible to move and shoot with ordnance in the same turn, and it is impossible to shoot any other weapons from the vehicle if you shoot the ordnance even though the vehicle is stationary.
EXAMPLE: If you shoot the Battle Cannon in a Leman Russ you cannot move and shoot the lascannon or side-armament sponsons in the same turn.