 Because of the Six-Day War in Middle East which had closed the Suez Canal due to the Egyptian Navy's blockage in 1967, "Ghazi", under the command of Commander Ahmed Tasnim, had to execute a submerged circumnavigation in 1968 from Africa to Western Europe which began from Karachi coast to Cape of Good Hope, South Africa and then through the Atlantic Ocean and it ended at the east coast of the Sea of Marmara where the Gölcük Naval Shipyard is located.Chief of Naval Staff Admiral S.M.Ahsan had arranged necessary refitting of "Ghazi"s computers at the Karachi Engineering and Shipyard Works (KESW) from the help from the local industry such as DESTO.