Fleet Timeline
When we got to Subic Bay, it was explained that due to the impending fall of the Shah of Iran, it was desired to get a carrier and submarine escort into the Indian Ocean.
The submarine could not transit the Malacca Strait submerged so we had to take the long route south through the Lombak Strait into the Indian Ocean to meet the carrier as it entered the Indian Ocean. The transit from Subic Bay to Lombak was another challenge since we had to remain submerged as we transited the inland seas of the Philippines including the Sulu Sea, the Celebes Sea and the Makassar Strait to get to the Lombok Strait. It was a route used by submarines in WW II, when transiting from Australia to the Japanese waters. It had been little used by submarines since. Much of the transit was in shallow water close to land.