| AUM-N-4 Diver | |
|---|---|
| Type | Anti-ship missile |
| Place of origin | United States |
| Service history | |
| Used by | United States Navy |
| Production history | |
| Designer | National Bureau of Standards |
| Designed | 1946-1949 |
| Specifications | |
| Warhead | Torpedo |
| Engine | Rocket |
The AUM-N-4 Diver, also known as Kingfisher D and AUM-4, was a proposed anti-ship and anti-submarine missile, developed for use by the United States Navy in the late 1940s. It was intended to carry a rocket-propelled torpedo that used a single rocket motor for both airborne and underwater propulsion; due to technical issues encountered in the development of the torpedo, no missiles were built before the program was cancelled.