Editing Smoke screen (section)

===Naval methods===
[[File:US Navy 090425-N-4879G-393 A group of multinational amphibious assault vehicles from the amphibious dock landing ship USS Ashland (LSD 48) deploy smoke to cover their landing during a simulated amphibious landing demonstration.jpg|thumb|[[Assault Amphibious Vehicle]]s deploying smoke to cover their landing]]
Warships have sometimes used a simple variation of the smoke generator, by injecting fuel oil directly into the funnel, where it evaporates into a white cloud. An even simpler method that was used in the days of steam-propelled warships was to restrict the supply of air to the boiler. This resulted in incomplete combustion of the coal or oil, which produced a thick black smoke. Because the smoke was black, it absorbed heat from the sun and tended to rise above the water. Therefore, navies turned to various chemicals, such as [[titanium tetrachloride]], that produce a white, low-lying cloud.<ref>{{cite video
 | title = The Royal Navy at War
 | medium =DVD
 | publisher =[[Imperial War Museum]]
 | location =London
 | date =2005}}</ref><ref>{{Cite web
  | title = Smoke
  | work = Treatment of Chemical Agent Casualties and Conventional Military Chemical Injuries
  | publisher = Department of Defense, Washington DC
  | date = 22 December 1995
  | url = http://www.globalsecurity.org/wmd/library/policy/army/fm/8-285/ch8.pdf
  | access-date = 27 May 2011}}</ref>