Charts. Iloilo Strait and Harbor, P. I., eastern portion of strait from Spanish surveys to 1895, western portion of strait from survey by U. S. Navy, 1900-01, scale 1:50,000; with insets, Iloilo River, from survey by U. S. engineers, 1902, scale 1:10,000; Port [Buluagan or] Santa Ana, from Spanish survey in 1843, scale 1:15,000; chart 4448.