Delagoa Bay, a Portuguese possession, is a large inlet of the Indian Ocean on the southeast coast of Africa. Stretching for 70 miles between 26° 20'and 25° 30' S. lat., it is 25 miles wide, and for size and accommodation is the finest natural harbour in South Africa, although landing facilities are still very primitive. There are several islands and shoals in the bay, but its navigation is safe and easy, and the anchorage commodious and well sheltered. The settlement of Lourengo Marques and surrounding country have been notoriously unhealthy; but in 1887 the swamps behind the town were filled in, and other improvements have since been carried out. The rivers Maputa, Tembe, and Umbelosi (joining to form the English River), and the Komati, fall into Delagoa Bay. The first two are navigable for some distance for small craft. In 1887 a company was formed in London to work a concession from the Portuguese government for ninety years, for the construction of a railway (293 miles) from Delagoa Bay to Pretoria in the Transvaal. The line was partly opened in 1888. See Rose Montiero, Delagoa Bay (1892).