Assertion: frigate's system | /r/HasProperty | developed for the british explorer-class
Facets:
value: further
type: DEGREE
Source sentences:
text: A similar system was not employed again until 1940 when the German Navy tested a hydrogen peroxide-based system, the Walter turbine, on the experimental V-80 submarine and later on the naval U-791 and type XVII submarines; the system was further developed for the British Explorer-class, completed in 1958.