Pedzisa mutsara unotevera: Munguva yehondo ya1971, aive mutungamiri wemaviri eArnala-class anti-submarine corvettes INS Kiltan uye INS Katchall vaive chikamu cheboka rebasa rakarwisa Karachi Harbour musi wa4 Zvita 1971 panguva ye
Basa rinonzi Operation Trident. Ngarava mbiri idzi dzaiva nebasa rokukurukurirana uye kuongorora zvinangwa nemaradar avo aiva nepamusoro uyewo kudzivirira ngarava dzinorwisa ngarava dzepasi pemvura.