thumb|right|271px|The W47 warhead reentry vehicle
Article
6 sectionsContents
- Design
- Live fire testing
- Reliability controversy
- See also
- References
- External links
thumb|right|271px|The W47 warhead reentry vehicle
The W47 was an American thermonuclear warhead used on the Polaris A-1 submarine-launched ballistic missile system. Various models were in service from 1960 through the end of 1974. The warhead was developed by the Lawrence Radiation Laboratory between 1957 and 1960.