Mezue ahịrịokwu na-esonụ: N'etiti abalị nke 2/3 Disemba 1971, "Hangor", na-anọgide submerged na a n'ebe ugwu direction, nyochara redio transmissions intercepted si warships nke Western Naval Command nke Indian Navy na ga-ẹkedori a
mwakpo mbụ nke rọketi na Karachi. "Hangor" gafere site na nnukwu Squadron nke Western fleet nke Indian Navy. Ụgbọ mmiri ahụ gafere kpọmkwem n'elu ụgbọ mmiri ahụ.