Searchlights

thumb|Auxiliary Territorial Service|ATS officers-in-training crew a 90 cm searchlight in Western Command, 1944

memorial to John Lennon near Reykjavík

submarine search light

annual tribute to the victims of the September 11 attacks

feature of the Nazi Party rallies in Nuremberg

The Bat-Signal is a distress signal device appearing in American comic books published by DC Comics, as a means to summon the superhero Batman. It is a specially modified searchlight with a stylized emblem of a bat affixed to the light, allowing it to project a large bat symbol onto cloudy night skies over Gotham City.

tactic of the German Air Force against British night bombers

meteorological tool