Assertion: frigate's system | /r/AtLocation | use
Facets:
value: by class frigates
type: OTHER
Source sentences:
text: The system is also in use by the Republic of Singapore Navy's Formidable-class frigates and Endurance-class landing platform dock ships and were deployed as part of coalition forces' port security efforts in Iraq as well as anti-piracy roles in the Gulf of Aden.