five o’clock in the afternoon
By then the Nautilus had reduced speed . It moved ahead at a saunter , so to speak . I observed that the Red Sea 's water was becoming less salty the closer we got to Suez . Near five o'clock in the afternoon , we sighted Cape Ras Mohammed to the north . This cape forms the tip of Arabia Petraea , which lies between the Gulf of Suez and the Gulf of Aqaba . The Nautilus entered the Strait of Jubal , which leads to the Gulf of Suez . I could clearly make out a high mountain crowning Ras Mohammed between the two gulfs .