Detail View: Touchton Map Library: Hydrographic/topographic map entitled "Selat Bangka and Selat Gelasa" (more completely: "Indonesia [/] Sumatera-East Coast [/] Selat Bangka and Selat Gelasa [/] From Netherlands surveys between 1864 and 1934." It was published by the Defense Mapping Agency Hydrographic/Topographic Center of Washington, D.C. This is the 9th edition, dated August 11, 1984, and numbered 71021. In addition to Selat Bangka and Selat Gelasa (according to the map's glossary, "selat" means "strait"), this map features parts of the South China and Java Seas, as well as Billitung (Belitung) Island, Bangka Island, and Sumatera (Sumatra) Island. These islands form part of the Southeast Asian country of Indonesia. Depth of water is indicated with numbers throughout the map. There is a conversion table of fathoms to meters and a graphic entitled "Index to Next Larger Scale Charts."