Astraea (nuclear warhead)
| Astraea A21 | |
|---|---|
| Type | Nuclear weapon |
| Service history | |
| In service | Planned from 2030s |
| Used by | Royal Navy |
| Production history | |
| Designer | Atomic Weapons Establishment |
| Specifications | |
Detonation mechanism | Contact, airburst |
The Astraea A21 is a British nuclear warhead planned to replace the Holbrook warheads on Royal Navy submarines from the 2030s. The new warhead will be carried by the upcoming Dreadnought-class submarines on Trident D5 missiles. It will share the Mark 7 re-entry body used on the planned American W93 warhead.