
thumb|right|271px|The W47 warhead reentry vehicle
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.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).