Colombo, Ceylon (now Sri Lanka), 1959. Breaking swells from the Indian Ocean supply this cleverly-designed pool with clean sea water. In the 1950's, Ceylon's economy was thriving and Colombo's harbor facilities were inadequate for the amount of shipping trying to use the port. As a result, freighters often rode at anchor in the roadstead for days or weeks.
My dad took this photograph on Kodachrome film with a Leica IIIC camera and 5cm ƒ/2.0 Summitar lens (still in use). I do not know the exact date and am not sure where the Kodachrome was processed then. I doubt the family sent it back to USA, but possibly Kodak had laboratories in Bangkok or Tokyo.